Contract Termination in NSW — Grounds, Procedure and Risk

John Merlo

5 hours ago

62 min read

Key Takeaways

Contract termination in NSW turns on one question before any other: where the right to terminate comes from. A right to end a construction contract arises from the contract, from the general law, or from statute — and each source carries its own procedure, its own notice requirements and its own consequences.
Many terminations that fail, fail on procedure. A cure period that was not allowed to run, or a notice that did not identify the default with precision, will defeat a ground that was otherwise sound.
The statutory right to suspend work for non-payment is not a right to terminate. Treating suspension as termination converts a lawful step into a breach of the contract the party was trying to enforce.
Terminating without a right is itself a repudiation. It reverses the parties' positions and exposes the terminating party to the very claim it was trying to avoid.

Introduction

A termination notice takes minutes to send and can take years to defend. Sent on a sound ground and in the right form, it ends a failing project and puts the claim where it belongs. Sent a few days early, to the wrong address, or on a ground the contract does not recognise, it hands the claim — and the profit on the unperformed work — to the party that was in default. Ending a construction contract is the most consequential step available to a party short of commencing proceedings. It stops the work, it releases security, it changes who is entitled to be paid, and it usually begins the dispute rather than resolving it.

This guide sets out the grounds on which a construction contract may be terminated in New South Wales, the notice and cure machinery that decides most cases, the separate rights created by statute, and the exposure that follows a termination that should not have been issued. It is written for the people who have to make the decision — principals, head contractors, subcontractors and their advisers — and it is organised in the order the decision is actually made. If you are a subcontractor owed money, start with the section on suspension for non-payment. If you are a homeowner or residential builder, go to the section on termination in residential building work. If a notice has just arrived, go to the checklist heading “If you receive a notice”. And if you have to decide this week whether to terminate, start with the seven questions in the decision framework near the end of this guide.

Contract termination in NSW: what the law actually permits

Before identifying a ground, it is worth being precise about where the right to terminate comes from. The three sources are not interchangeable, and a party that relies on the wrong one usually loses on that point alone.

The three sources of a right to terminate

The first source is the contract. Most construction contracts contain an express clause permitting termination on defined events — failure to proceed with due diligence, failure to comply with a direction, insolvency, or a sustained breach. Where the clause applies, it must be followed exactly.

The second source is the general law. Independently of the contract, a party may terminate where the other has repudiated its obligations, or has breached a term the parties treated as essential. Shevill v Builders Licensing Board (1982) 149 CLR 620 held that a contractual right to terminate for a stated breach does not, without clear words, confer loss-of-bargain damages, and that late payment alone was neither repudiation nor breach of an essential term. The intermediate category — a breach serious enough to justify termination although the term is not essential — was confirmed in Koompahtoo Local Aboriginal Land Council v Sanpine Pty Limited (2007) 233 CLR 115. The general law right exists alongside any contractual right and is not displaced by it, although the contract may require a step to be taken before the general law right can be exercised.

The third source is statute. The Building and Construction Industry Security of Payment Act 1999 (NSW) (the Security of Payment Act, often called the SOP Act) creates a right to suspend work for non-payment, and insolvency legislation affects what a contract can and cannot do once a counterparty enters external administration. Neither is a general statutory right to terminate, and the difference is dealt with below.

The practical point is that each source carries its own conditions. A party that wants to terminate should identify which source it is relying on, satisfy that source's requirements, and say so in the notice. A notice that gestures at all three without committing to one is the weakest document in this area of practice. Where the statutory source is the one relied on, s 34 of the Security of Payment Act makes the position secure: the Act has effect despite any contrary contractual provision, and a provision excluding, modifying or restricting it, or that may reasonably be construed as an attempt to deter a person from taking action under it, is void.

Why termination differs from suspension

Suspension is temporary. It stops performance for a period and preserves the contract, so that work can resume when the reason for suspension falls away. Termination is permanent. It ends the contract, and it crystallises the parties' rights as at that date.

The distinction matters because the Security of Payment Act gives a statutory right to suspend work in defined circumstances relating to non-payment. Exercising that right is not termination, and a party that treats it as such may find itself in breach of the very contract it was trying to enforce. The suspension right is examined in its own section below.

Suspension is usually the better first step. It applies pressure, it is reversible, and it leaves the suspending party in a position to terminate later if the position does not change. The tactical comparison between suspension, step-in and termination appears in the decision table further on.

What termination does and does not bring to an end

Termination discharges the parties from the obligations that remain to be performed. It does not, of itself, extinguish rights that accrued before the termination date.

That distinction is the single most commonly misunderstood feature of the subject. Amounts already due for work performed remain payable. Claims for breach that had already occurred survive. Accrued rights to extensions of time, to variations approved before termination, and to amounts certified but unpaid are not erased by the ending of the contract.

What termination does affect is the mechanism for pursuing those rights. They may have to be pursued as damages or as a debt rather than through the contract's own processes, and the contract's dispute resolution clause may or may not survive. Whether it does is a question of construction, and it should be answered before the notice is issued rather than afterwards.

An understanding of the contract's own terms is therefore the foundation of the whole exercise. Where the contract itself has been poorly documented, the analysis is harder and the risk of a misstep is greater. The clauses that matter most are collected in the checklist at the end of this guide, and the wider question of how a construction contract allocates risk is dealt with in our guide to construction contracts in NSW.

PRACTICE NOTE: Before drafting any notice, prepare a one-page schedule of accrued rights: amounts certified but unpaid, variations approved but not valued, extension of time claims running, retention held, and security outstanding. It takes an hour and it is the document that decides what the termination is worth. A termination issued without it is a termination issued blind.

At a glance: which remedy fits the problem

The same grievance can usually be met with more than one response, and the choice between them decides the exposure. The table below is the routing device for the rest of this guide: identify the problem, and the response that carries the least risk while achieving the commercial objective.

Problem	Response	Source of the power	Reversible?	Principal risk
Payment claim unpaid	Suspend work under the Act	Statutory, s 27 of the Security of Payment Act	Yes — resume on payment	Suspension notice invalid or work stopped before the notice period runs
Payment claim unpaid, relationship at an end	Adjudicate, then decide whether to terminate	Statutory adjudication; contract for termination	Adjudication yes; termination no	Treating a statutory suspension as a termination
One package defective or delayed	Step-in or partial termination	Contract only	Partly — the rest continues	Taking back more work than the clause permits
Sustained default, cure period expired	Terminate for contractual default	Contract	No	Defective notice, or termination before the cure period expires
Repudiatory conduct	Terminate at general law	General law	No	Conduct falling short of repudiation, so the termination is itself repudiatory
Counterparty in administration	Hold, then take advice	Corporations Act 2001 (Cth)	Yes — sequence matters	Acting in breach of the statutory stay or the ipso facto stay
Project uneconomic, no default	Negotiated exit or deed	Agreement of both parties	Yes	Purporting to terminate for convenience where no such clause exists
Residential work, defective or incomplete	Notice, then Tribunal	Home Building Act 1989 (NSW)	Yes	Terminating informally and losing the insurance position

Two features of that table carry most of the practical weight. The first is that only two of the eight responses are irreversible, and both of them are terminations. The second is that the reversible responses are available in more situations than most parties assume — which is why so many terminations are issued in matters that never needed one.

The grounds for terminating a construction contract in NSW

There are five workable grounds and a larger number of grounds that parties believe exist but which do not. The difference between them is evidential, not rhetorical.

Ground one — repudiation

Repudiation is conduct that shows an intention no longer to be bound by the contract, or to fulfil it only in a manner substantially inconsistent with the party's obligations. It is assessed objectively, from the conduct, and the intention does not have to be stated.

In construction, repudiation is most often established by a pattern rather than a single act: a contractor that demobilises without explanation, a principal that locks the site and engages another builder, or a party that makes continued performance conditional on terms the contract does not contain. A single missed payment is not repudiation. A refusal to pay anything, coupled with an assertion that the contract is at an end, usually is.

The evidential burden is the reason repudiation is pleaded in the alternative far more often than it is proved. Conduct has to be read as a whole, over time, and the party asserting it needs the contemporaneous record to make the pattern visible. That is a documentary exercise, and it begins long before the notice.

Ground two — breach of an essential term

A term is essential where the parties agreed that strict performance of it was fundamental, or where the nature of the term and the consequences of its breach make that conclusion unavoidable. Breach of an essential term gives the innocent party an immediate right to terminate, without any cure period, because the parties have already agreed that the contract fails if the term is broken.

Construction contracts create relatively few essential terms, and the ones that exist are usually identified expressly. A clause that states that time is of the essence, or that a particular obligation is a condition, does that work. Absent express language, a court will look at the commercial importance of the term and the consequences of breach, and it will usually conclude that the term was intermediate rather than essential.

Termination for breach of an essential term is therefore narrower than parties expect. Where the term is not essential, the analysis moves to the intermediate category: a breach that is sufficiently serious to deprive the innocent party of substantially the whole of the benefit the contract was intended to confer. That is a question of degree, and it is decided on the evidence of what the breach actually prevented.

Ground three — contractual default and the cure regime

The commonest ground is the one the contract creates. A clause will define an event of default — failure to proceed with due diligence, failure to comply with a direction, suspension of work without a lawful excuse, failure to maintain insurance, or a sustained failure to pay — and then prescribe a process: notice, a period to remedy, and termination if the default continues.

The right is procedural as much as substantive. The event must fall within the definition, the notice must satisfy the clause, and the cure period must be allowed to expire before the termination takes effect. A party that is right on the event and wrong on the process has no right at all.

Two things follow. The definition of default has to be read narrowly, because a clause drafted for one kind of failure does not extend to another. And the process has to be diarised from the moment the notice is sent, because the date on which the cure period expires is the earliest date on which a valid termination can take effect.

Ground four — insolvency and external administration

Insolvency is the ground most likely to arise and the one on which the contract is least reliable. A clause permitting termination on the appointment of an administrator, or on a company becoming unable to pay its debts, expresses the parties' commercial intention, but the Corporations Act 2001 (Cth) determines what can actually be done once an appointment is made.

Two statutory constraints matter most. A proceeding against a company in administration cannot be begun or continued without consent or leave, which is the effect of s 440D of the Corporations Act. And a provision that purports to terminate, or to allow termination, by reason of the counterparty entering administration may be caught by the ipso facto stay in s 451E — the statutory restriction on enforcing so-called ipso facto clauses. The right cannot be enforced during the stay period defined in s 451E(2), and s 451E(4) then makes it unenforceable indefinitely after that period to the extent that the reason relied on is the company's financial position before the end of it, or the fact that it was under administration.

The practical result is that a termination clause is not a complete answer to a failing counterparty. It establishes what the parties agreed; the statute determines what may be done, and in what order. The sequence is set out in the insolvency section below.

Ground five — termination for convenience

Some contracts permit a party to terminate for convenience, meaning without cause, on notice. Where such a clause exists it must be read carefully, because convenience clauses typically preserve the contractor's entitlement to be paid for work done and sometimes to loss of profit on the unperformed balance.

The absence of such a clause is equally important. There is no general right to terminate for convenience in New South Wales, and a party that ends a contract because the project has become uneconomic has repudiated it. That is a common and expensive misunderstanding, particularly where a client has assumed that a private arrangement with a third party will be treated as sufficient grounds.

Grounds that do not work

Four grounds are commonly asserted and do not stand alone. Cost overruns, however alarming, are not a ground unless they result from a breach or are addressed in a clause. A deteriorating commercial relationship is not a ground. A disagreement about the standard of work is not a ground unless the work breaches the contract in a way the contract makes terminable. And a belief that the other party will default in future is not a ground at all.

Where one of these is the real reason for ending the contract, the honest position is that there may be no right to terminate. What that leaves is negotiation, a negotiated exit, or a course of conduct that establishes repudiation over time. Where the parties are still talking, early dispute resolution is usually the cheapest way to reach that exit.

Understanding the grounds correctly is worth the effort, because the cost of the alternative is dealt with below. For matters where the parties have reached the point of needing advice rather than analysis, construction law advice is available across these issues.

The authorities that decide these arguments

Termination disputes turn on a small number of settled principles. The table below collects the ones that appear most often in NSW construction matters, with the proposition each stands for. Citations are to the authorised reports; each judgment is freely available on AustLII.

Authority	Citation	Principle
Shevill v Builders Licensing Board	(1982) 149 CLR 620	A contractual right to terminate for a stated breach does not, without clear words, confer loss-of-bargain damages; late payment alone is neither repudiation nor breach of an essential term.
Koompahtoo Local Aboriginal Land Council v Sanpine Pty Limited	(2007) 233 CLR 115	A party may terminate for a breach of a non-essential term where the breach is sufficiently serious to deprive it of substantially the whole of the benefit of the contract.
Progressive Mailing House Pty Ltd v Tabali Pty Ltd	(1985) 157 CLR 17	The ordinary principles of contract, including termination for repudiation or fundamental breach, apply to leases. A contractual power to terminate does not, merely by its presence, exclude those principles, and damages for loss of bargain may follow termination under that power where the lessee has repudiated or committed a fundamental breach.
Wood Hall Ltd v Pipeline Authority	(1979) 141 CLR 443	A performance guarantee payable on demand is a separate contract; the bank pays on the instrument, not on the merits of the underlying dispute.
Probuild Constructions (Aust) Pty Ltd v Shade Systems Pty Ltd	(2018) 264 CLR 1	An adjudicator's determination under security of payment legislation is not reviewable for non-jurisdictional error of law on the face of the record.

Only Wood Hall and Probuild arose from construction contracts. Shevill and Progressive Mailing House concerned leases, and Koompahtoo a land development joint venture; they are relied on in construction disputes because they state general contract principles. Progressive Mailing House, in particular, is cited in construction matters because it confirms that an express termination clause sits alongside, rather than replaces, the general law right to terminate for repudiation or fundamental breach. Probuild concerns the adjudication regime, and it matters here because an adjudication determination obtained around the time of a termination is difficult to disturb. The pattern in those authorities is that the general law supplies the default rules and the contract displaces them only to the extent it says so. That is why the wording of the termination clause, and not the strength of the grievance, decides most of these cases.

WARNING Do not rely on a case for a proposition it did not decide. A submission that cites Shevill for the proposition that any breach triggering an express termination clause also carries loss-of-bargain damages will be met with the answer that Shevill decides the opposite, and the credibility of everything else in the submission goes with it.

Suspension under the ***Security of Payment Act*: a right to stop, not to end**

The Security of Payment Act gives a claimant a right, in defined circumstances, to suspend carrying out construction work or supplying related goods and services where a payment claim has not been met. It is a powerful and lawful response to non-payment, and it is the most frequently misused provision in the statute.

What s 27 of the Security of Payment Act permits

Section 27 of the Security of Payment Act permits a claimant to suspend carrying out construction work, or supplying related goods and services, where notice of intention to suspend has been given to the respondent under s 15, s 16 or s 24 and at least two business days have passed since it was given. Which of the three notices is available depends on the payment position: s 15 where no payment schedule was provided and the claimed amount is unpaid, s 16 where a payment schedule was provided and the scheduled amount is unpaid, and s 24 where an adjudicated amount is unpaid. A suspension that complies with s 27(1) is a statutory entitlement: s 27(3) provides that the claimant is not liable for any loss or damage the respondent suffers as a consequence of the work not being carried out during the suspension, and s 34 prevents the contract from excluding or restricting the right. A principal that treats a lawful suspension as a repudiation or as a default under the contract is therefore on unsafe ground.

The right is also narrower than the grievance that usually prompts it. It applies to a payment claim that has been served under the Act and has not been paid. It does not apply to a disputed variation that has never been claimed, to a set-off the claimant disagrees with, or to a contract that is not a construction contract for the purposes of the Act.

Whether an entitlement to suspend arises at all therefore depends on the statutory groundwork: a valid payment claim, served no earlier than s 13(1A) or (1B) of the Security of Payment Act permits (the last day of the named month, or an earlier date the contract provides) and within the period allowed by s 13(4), being the contractual period or 12 months after the work was last carried out, whichever is later, a due date fixed by s 11 (15 business days after the claim where payment is by a principal to a head contractor, 20 where it is to a subcontractor, unless the contract provides an earlier date; an exempt residential construction contract follows s 11(1C) instead), and no payment by that date. The requirements for a valid claim are dealt with in our guide to payment claims and schedules in NSW.

The notice, the two business days and the limits

A suspension is not effective unless the claimant gives the respondent written notice of the intention to suspend, and the notice must be given at least two business days before the suspension takes effect. The notice should identify the payment claim and the ground — that is, the non-payment — and it must state that it is made under the Security of Payment Act, which is the requirement in s 15(3), s 16(3) and s 24(2).

Two errors follow from that requirement. The first is stopping work on the day the payment is missed, without the notice. The second is omitting the statement that the notice is made under the Act, which is the one content requirement the statute imposes and the one most often missed. Either error puts the claimant in breach, and the breach is a default under the contract, which is the opposite of the protection the section is meant to give.

There are also consequences that run in the claimant's favour. A lawful suspension is protected: s 27(3) of the Security of Payment Act provides that a claimant who suspends in accordance with s 27(1) is not liable for loss or damage suffered by the respondent as a consequence of the work not being carried out, and s 27(2A) makes the respondent liable for loss or expenses the claimant incurs as a result of the respondent removing any part of the work or supply from the contract, which s 13(3)(a) allows to be included in a later payment claim. The Act confers no entitlement to an extension of time; that comes from the contract. The s 27(2A) amount is worth quantifying as it is incurred, because it must be proved.

The limits are equally important. The right is also time-limited: s 27(2) of the Security of Payment Act provides that it exists only until the end of the period of three business days immediately following the date on which the claimant receives payment. The right to suspend is not a right to demobilise, to remove plant permanently, or to treat the contract as at an end. A party that goes beyond suspension has terminated without a right, and the analysis in the rest of this guide then applies to it. The step that follows a lawful suspension, if payment is still withheld, is a statutory one rather than a contractual one, and the procedure is set out in our guide to adjudication in NSW.

Why suspension is the better first step

Suspension is reversible, it is proportionate, and it preserves the contract's machinery — valuation, certification and dispute resolution all continue. It also preserves the claimant's position if the matter later resolves, which a termination does not.

The tactical sequence that works in most non-payment matters is short. Serve the payment claim properly. If no payment schedule or payment follows, apply for adjudication. If payment is still withheld, suspend on the statutory notice. Terminate only if a contractual or general law ground independently exists, and only on advice where the amount is material.

That sequence is not timidity. It is the order in which each step remains available. A party that terminates first loses the statutory route, hands the other side a repudiation argument, and then has to defend a claim while proving its own.

The contractual notice and cure regime

Why the cure period decides the case

A cure period exists to give the defaulting party a genuine opportunity to remedy the breach. That purpose drives how strictly the machinery is applied: a notice that does not allow the period to run in full, or that does not identify what must be done, defeats the termination that follows.

Two errors recur. The first is terminating before the cure period has expired, because the terminating party had already decided the outcome. The second is continuing to act as though the contract were on foot during the cure period — for example, by issuing further directions, deducting amounts, or taking possession of the site. Conduct of that kind is inconsistent with the assertion that the contract has come to an end, and it gives the other side a compelling argument.

Where a default is continuing and there is a real question about what would constitute a cure, the notice should say what the terminating party requires. That is not a concession; it is a demonstration of the ground on which the termination will rely.

The show cause notice

Many construction contracts provide for a show cause notice as a precondition to termination. The notice asks the other party to show why the contract should not be terminated, and it typically triggers a period during which the response is considered before any decision is made.

The sequence matters. A show cause notice is not a termination notice and must not be drafted as one. It is an invitation to respond, and a party that issues it in the language of finality may have started the clock on the wrong basis. Once the response is received, the terminating party forms its own view and issues the termination notice if the ground remains.

Keeping the two documents separate, in wording and in timing, is one of the simplest disciplines available and one of the most frequently abandoned. Where a contract requires both, issuing a single letter that does both jobs satisfies neither.

A contractual show cause notice should not be confused with the show cause notice a contractor may receive from the regulator before disciplinary action is taken against its licence. The name is the same; the source, the consequences and the response required are entirely different, and a contractor that receives both on the same project should manage them as separate matters.

Drafting failures that defeat a termination

Six failures recur in contested terminations. A notice delivered to the wrong address or by a means the contract does not permit. A notice that relies on a clause which does not cover the event. A notice that fails to state the default with enough precision to allow a cure. A notice that shortens the cure period. A notice that relies on conduct occurring after the notice was given. And a notice that asserts multiple grounds without separating the facts supporting each, so that a failure on one weakens the credibility of the rest.

Each of these is avoidable with care taken before the notice is sent. Each is far more expensive to fix afterwards, because a defective notice cannot generally be cured by issuing another one after the fact.

WARNING A notice that is defective does not merely fail to terminate the contract. It usually amounts to a repudiation by the party that issued it, because it asserts an entitlement the party did not have. The party on the receiving end can accept that repudiation and claim damages — which is precisely the outcome the notice was meant to avoid.

Termination from each party's position

The doctrine is the same whoever is terminating. What differs is the rights available, the exposure carried, and the practical consequences on site.

The principal and head contractor

A principal terminating a main contract usually relies on a contractual default clause, supported where necessary by repudiation. The principal's advantages are possession of the site, control of the security, and the ability to engage a replacement contractor.

Its exposure is corresponding. If the termination is wrongful, the principal faces a claim for the value of the unperformed work, for loss of profit on the balance, and for the cost of demobilisation and remobilisation. It also loses the ability to deduct liquidated damages for delay, because those depend on the contract being on foot.

The final point is the one most often overlooked. An entitlement to liquidated damages is contractual, and it is a right to deduct a defined sum per period of delay. Terminating ends the mechanism, and the principal's delay loss thereafter has to be proved as general damages, which is a materially harder exercise. The interaction is examined in our guide to liquidated damages in NSW.

The subcontractor

A subcontractor terminating its subcontract — usually at the end of a long-running subcontractor payment dispute — faces a different set of constraints. It usually holds less security, has no possession of the site, and must remove its plant, which may be its principal asset. Its leverage is the statutory payment regime rather than the contract.

The statutory route is usually the better first step. Where a payment claim has been served and not met, the rights under the Security of Payment Act produce a fast determination and a basis to suspend, and in a proceeding to recover the unpaid amount as a debt the respondent cannot bring a cross-claim or raise any defence arising under the construction contract (s 15(4), s 16(4)). Terminating abandons that protection, and exposes the subcontractor to a counterclaim for failure to complete and to the head contractor's programme loss.

Where the relationship has genuinely broken down, the exit is often better achieved by negotiation than by notice. A negotiated release of retention and a final account, documented properly, usually returns more than a termination that has to be litigated to be vindicated.

A subcontractor whose head contractor will not pay has a further lever that does not depend on terminating anything. Under the Contractors Debts Act 1997 (NSW), an unpaid subcontractor that has obtained a judgment or an adjudication certificate for the debt can serve a notice of claim on the principal, which may then become liable to pay the subcontractor out of money it owes the head contractor. It is slower than adjudication, but it reaches the party that actually holds the money.

Termination down the chain

Termination at one level of the chain has consequences at the others, and the consequences are not always symmetrical.

When a principal terminates the head contract, the head contractor's obligations to its subcontractors do not automatically end. The head contractor remains liable for work performed, and it may be in breach of its own subcontracts by being unable to provide access or instructions. Subcontractors in that position hold claims against the head contractor and, in narrower circumstances, against the principal.

A principal that understands this can reduce its own exposure by dealing directly with the subcontractors, taking assignments of their claims, or negotiating a transfer of the works. A principal that does not understand it frequently discovers that it has terminated one contract and created several others.

Where the works are to be transferred rather than abandoned, the practical steps — access, documentation and the engagement of a replacement — are dealt with below.

Termination and the security of payment regime

The statutory regime and the contract run on separate tracks, and a termination does not stop either of them. The questions that arise are about what survives, what continues to run, and what has to be done before the contract is brought to an end.

Preserving the right to claim after termination

Accrued rights survive termination, but the way they are pursued changes. Three practical steps preserve them.

First, quantify what is owed as at the termination date rather than waiting for the final accounting. A schedule of amounts due, prepared contemporaneously, is far more persuasive than a reconstruction produced a year later.

Second, preserve the right to claim for work performed but not yet certified. The contract may provide a mechanism, and where it does, using it before termination is easier than using it afterwards.

Third, keep the evidence. Site records, progress photographs, and the correspondence that establishes what was instructed and when are the material on which both the claim and the defence will rest.

Termination disputes are frequently decided on documents created long before the termination. That is a reason to treat record-keeping as a live obligation through the period of difficulty, not only at the start of the project. The documents that establish what was instructed and when carry the claim, and the approach to assembling them once a dispute is live is set out in our guide to resolving a construction dispute in NSW.

The interaction with a payment schedule

Where a payment claim is outstanding when termination occurs, the payment schedule machinery continues to matter. The periods under the statute run independently of the contract's termination, and a respondent that fails to provide a schedule within the period the Act allows becomes liable to pay the claimed amount on the due date under s 14(4) of the Security of Payment Act, and the claimant may then recover it as a debt or apply for adjudication under s 15.

Two questions arise in practice. Whether a claim served before termination can still be pursued, and whether further claims can be served after it. The second is answered by s 13(1C) of the Security of Payment Act: where a construction contract has been terminated, a payment claim may be served on and from the date of termination. The first depends on the timing rules in s 13(1A) and (1B), the one-claim-per-month rule in s 13(5), and the period allowed by s 13(4). The analysis is set out in the definitive guide to security of payment and adjudication in NSW, and the interaction is one of the few areas where a termination prompts a specific statutory question rather than a general one.

The practical consequence is that a party intending to terminate should check the payment position first. If a claim is outstanding, serving it and pursuing adjudication before the termination may produce a faster and more certain outcome than the termination itself, and it does not prejudice the right to terminate later.

Termination, security and bank guarantees

Calling security on termination

Retention and bank guarantees exist to give the principal recourse if the contractor fails. On termination, the question of whether security may be called depends on the instrument and on the contract's terms, not on the strength of the principal's case.

Where the contract permits a call on default, the principal may call. Where it does not, calling the security may itself be a breach, which is a poor position from which to argue that the other party was in default.

The safer sequence is to establish the default, issue the notice, allow the cure period to run, and only then deal with security. A principal that calls security first and terminates afterwards invites the argument that the security was used to fund the termination rather than to remedy the default.

Why a guarantee stands apart from the contract

A bank guarantee is a separate contract between the bank and the beneficiary. Where it is payable on demand, the bank's obligation is not qualified by the underlying dispute, and the principal's right to call is not affected by the contractor's assertion that the call is unjustified. That principle was stated in Wood Hall Ltd v Pipeline Authority (1979) 141 CLR 443 and it has not moved.

That independence cuts both ways. It means a call can be made and honoured even where the contractor has a strong underlying position, and it means the contractor's remedy is generally a claim to recover the money rather than an application to stop the payment. An injunction is available only in the narrow cases where the call is fraudulent or the underlying contract plainly does not permit it.

Retention, set-off and back charges

Retention is a contractual device rather than an instrument, and its release is governed by the contract's own terms. On termination, the question is whether the retention held is retained pending finalisation of accounts or released according to the clause. Most contracts provide for the former, which means the principal holds the money but must account for it.

Set-off and back charges raise the same issues that arise in ordinary payment disputes, with the added complication that the terminating party may be asserting that the contract is at an end while continuing to rely on its terms. That tension is legally manageable but it has to be handled deliberately, because a party cannot generally rely on a contract for one purpose and deny it for another. Once the counterparty is in winding up the contractual position is displaced: s 553C of the Corporations Act requires mutual credits and dealings to be set off and only the balance proved, subject to the notice exception in s 553C(2).

Retention money is also subject to statutory trust requirements in defined circumstances. Part 2 of the Building and Construction Industry Security of Payment Regulation 2020 (NSW) applies to a construction contract with a value of at least $20 million (cl 6), and requires a head contractor holding retention money for a subcontractor to hold it in trust and keep it in a retention money trust account (cl 8(1)). Withdrawals are confined by cl 10, and cl 12 makes the money unavailable to pay the head contractor's debts, while cl 12(2) preserves any just claim the head contractor has against it. The obligation sits on the head contractor, not the principal, and the trust restricts the ordinary right of set-off without extinguishing it. The point should be checked before any retention is applied against a claim.

The risks of terminating wrongly

Wrongful termination as repudiation

Wrongful termination of a construction contract — a termination without a right — is a repudiation by the terminating party. Its practical effect is to reverse the parties' positions: the party that was in default, or was heading towards a dispute, may now be the innocent party entitled to accept the repudiation and claim damages.

That reversal explains the frequency with which termination is threatened and not carried out. The threat is leverage. The act is a commitment that changes who holds the claim, and it should never be issued as a negotiating device.

The costs that follow

A wrongful termination exposes the terminating party to three categories of loss. The value of the work performed before termination, if it has not been paid. The cost consequences of the demobilisation for the other party, including standing plant and labour. And the loss of the profit the other party would have earned on the unperformed balance, which is often the largest figure and the most contested.

Where the contract provided for liquidated damages, those may also be lost to the terminating party, as explained above. And the costs of the proceeding itself follow the outcome, which is governed by the court's discretion under s 98 of the Civil Procedure Act 2005 (NSW) applied through r 42.1 of the Uniform Civil Procedure Rules 2005 (NSW), which makes costs follow the event. The mechanism that moves a costs order to an indemnity basis is the offer of compromise regime in rr 42.13 to 42.17, supplemented by Calderbank offers made outside the rules, and it is the one a party deciding whether to terminate should price.

Losing accrued rights

Independently of the claim the terminating party faces, it may lose rights it had accumulated. An entitlement to an extension of time, an approved variation not yet valued, or a certified amount not yet paid can each be lost if the termination leaves no mechanism to enforce them. A variation that has been approved but never valued is a claim in its own right, and the procedure and time bars that govern it are dealt with in our guide to variations in construction contracts.

The safeguard is a schedule of accrued rights prepared before the notice is issued. Where the position is genuinely unclear, that schedule itself is a reason to take advice before acting rather than after.

Site and practical consequences

The operational consequences are immediate. Access to the site, the removal of plant, responsibility for security and safety, and the position of subcontractors all have to be dealt with on the day, not at the hearing.

Two practical rules apply. Preserve the site as found unless safety requires otherwise, because the state of the works is central to the dispute. And record everything: what is on site, what condition it is in, what has been done, and what remains. Where the works are to be photographed, date the images.

The clocks that decide the file

Every termination matter runs against several clocks at once, and they are set by different instruments. The table collects the ones that most often determine whether a right is still available. The periods are the general rules; a contract, a notice or a statute may shorten or extend them, and each should be confirmed against the instrument that applies.

Clock	Period	Source	What it governs
Contractual cure period	As the contract provides — commonly 5 to 15 business days	The contract	The earliest date a termination can take effect
Show cause response period	As the contract provides	The contract	Whether the precondition to termination has been satisfied
Notice of dispute period	As the contract provides — often 10 to 20 business days	The contract	Whether the contractual dispute process must be exhausted first
Suspension notice	At least 2 business days after notice	Building and Construction Industry Security of Payment Act 1999 (NSW), s 27(1), (2)	When a lawful suspension may begin, and when it ends (3 business days after payment is received)
Adjudication application	10 business days after receiving the payment schedule (s 17(3)(c) of the Security of Payment Act); 20 business days after the due date where a scheduled amount is unpaid (s 17(3)(d)); or, where no payment schedule is provided, 20 business days after the due date to give notice of intention to apply, 5 business days for the respondent to provide a schedule, then 10 business days to apply (s 17(2), s 17(3)(e))	Building and Construction Industry Security of Payment Act 1999 (NSW)	Whether the statutory payment route remains open
Statutory warranty claim	6 years for a major defect, 2 years otherwise; from completion, or from termination or cessation of work where the work is not completed	Home Building Act 1989 (NSW), s 18E(1)	How long a residential defect claim survives. The separate insurance period of cover is in s 103B: 12 months for non-completion, 6 years for a major defect, 2 years for other loss
Claim in contract	6 years from the cause of action	Limitation Act 1969 (NSW), s 14	The outer limit for a damages claim
Statutory stay in administration	The stay period in s 451E(2), and indefinitely after it where s 451E(4) applies	Corporations Act 2001 (Cth), s 440D, s 451E	Whether a proceeding may be begun or continued (s 440D), and whether a termination right may be enforced (s 451E)

PRACTICE NOTE: Diarise every date in the table on the day the dispute begins, not the day the notice is sent. The two dates that decide most matters are the expiry of the cure period and the expiry of the notice of dispute period, and both run from events that happen before anyone thinks to open a file.

Taking over the works

Access, possession and the state of the works

On termination, the terminating party usually takes possession and the contractor usually must leave. The contract will set out the mechanics, and they should be followed, because a contractor that remains on site after termination creates both a liability issue and a practical obstacle to completion.

Before anything else is moved, the state of the works should be recorded. That record serves two purposes: it establishes what was completed, which affects the final account, and it establishes what is defective or incomplete, which affects the claim for the cost of completing it.

Engaging a replacement contractor

Engaging a replacement is usually necessary and rarely straightforward. The replacement has to price work it did not design or begin, which means it will price risk into the figure. That figure then becomes the measure of the terminating party's loss, and it will be attacked on the basis that it includes contingency rather than cost.

The defence is documentation. A replacement engagement documented through a competitive process, with the scope defined by reference to the original contract and the recorded state of the works, is far more durable than a figure arrived at informally. The same principle applies to the approach taken by a court when the cost of completion is in issue.

Documenting the handover

A handover schedule is worth preparing even where no dispute is expected. It should identify the works completed, the works incomplete, the defects observed, the materials and plant on site and their ownership, and the documents required under the contract.

That schedule becomes the baseline for the completion cost, and it prevents the argument that the terminating party completed more work than was necessary or paid more than the market required.

Where the works are to be completed by others, the sequence should be: record, photograph, value, then engage. A replacement engaged before the record is made destroys the very evidence that would have justified the cost.

Proving and defending a termination claim

The evidence that decides it

Termination disputes are decided on the contract, the notices, and the contemporaneous record of events. The contract establishes the right and its conditions. The notices establish whether the conditions were satisfied. The record establishes whether the ground relied on existed at the time.

The third of these is where most parties are weakest. Establishing that a contractor was not proceeding with due diligence, or that a breach was sustained, requires evidence of what was happening week by week. Site diaries, programme updates and correspondence do that work. A narrative constructed afterwards does not.

Expert evidence and completion state

Where the dispute concerns the state of the works, expert evidence is usually necessary. The expert's task is to assess what was completed, what was defective, and what it would reasonably cost to bring the works to the contracted standard. In building and construction disputes this is the most common form of technical evidence, and the principles are similar to those applied to defective work and to the statutory warranties discussed below.

The timing of the instruction matters. An expert engaged after the works have been completed by others is describing a building that no longer exists, and the opinion is correspondingly weaker. Where a termination is contemplated, the expert should be retained before the replacement contractor starts, not after.

Quantifying the loss

Three heads of loss commonly arise. The cost of completing the works, measured against the contract sum. The delay losses caused by the termination, which have to be proved rather than assumed. And the loss of bargain, which is the difference between the contract price and what it cost to have the work done.

Each requires evidence, and each is contested. The party with the better contemporaneous record generally does better.

Where the amount is substantial, the procedural route matters as much as the quantification. Commercial litigation in NSW sets out how a construction proceeding is run, and where delay is the measure of the loss, the method of proving it is dealt with in our guide to delay and disruption claims. Where proceedings are likely, the matter runs through our litigation team.

Termination and the standard form contracts

Why the form of contract matters

Most construction contracts in New South Wales are written on one of a small number of standard forms. The AS 4000-1997 general conditions are the traditional form for construct-only work; AS 4902-2000 is the design and construct equivalent; AS 2124-1992 still appears on older projects; and GC21 is the New South Wales Government's form for public works. Bespoke agreements exist, but they usually begin from one of these forms and are amended.

The form matters because the termination machinery is part of the form. The definition of default, the length of the cure period, the person who may issue the notice, the manner of service, and whether a show cause step is required all come from the contract rather than from the general law. A party that has advised on one form and applies the same steps to another will usually be wrong on the detail, and the detail is where terminations fail.

There is a second reason the form matters. The forms allocate risk deliberately, and the allocation of risk is what a termination dispute is usually about. A form that places design responsibility on the contractor produces a different set of defaults from one that leaves it with the principal. Before a ground is asserted, the form has to be read for what it actually requires of each party.

Where the notice provisions sit in the common forms

Two groups of clauses do the work in every form. The first defines the events that constitute default. The second prescribes what must happen when one occurs.

Those clauses follow a common sequence. An event of default occurs. The party not in default gives written notice specifying the default. A period is allowed for the default to be remedied. If the default is not remedied within that period, the party may terminate by further notice. The differences between the forms sit in the definitions, in the length of the periods, and in whether the right to terminate is expressed as the exclusive remedy or as an addition to what the general law already gives.

The procedural requirements are the part most often missed. Some forms require the notice to be given to a nominated representative, by a nominated method, and to a nominated address. A notice served another way may be treated as never having been served, and the consequence is that the cure period never began to run. Where the contract requires a notice to be signed by a particular officer, or accompanied by supporting material, that requirement is a condition of the power, not a formality.

It also matters whether the form permits partial termination. Some forms allow the principal to terminate part of the work and continue with the rest, or to take specified work out of the contractor's hands without ending the contract. Where that option exists it is usually preferable, because it preserves the contract's machinery for the work that continues and reduces the exposure that a full termination creates.

Bespoke amendments that change the analysis

Amendments are where the risk sits. A schedule of amendments can transform a balanced form into something materially different, and the transformation is usually invisible unless the schedule is read against the conditions it changes.

Five amendments change the analysis most often. Shortening or deleting the cure period. Making insolvency an immediate event of default for which no cure is available. Adding a clause permitting termination for convenience. Extending the definition of default to include failure to comply with any direction of the superintendent, however minor. And changing the service provisions so that notice may be given by email to a project address.

Each of those has a consequence. Removing the cure machinery does not make the contract easier to terminate lawfully; it removes the step that protects a termination from attack, so the terminating party has to be more certain of the ground, not less. An extended definition of default invites reliance on a trivial non-compliance, which is the kind of reliance a court is unlikely to accept. And a service provision allowing email creates a factual question about whether the notice was received, which is a question the terminating party may have to answer; s 13A of the Electronic Transactions Act 2000 (NSW) determines when an electronic communication is taken to have been received, so the question is one of fact as much as of construction. One external constraint sits over all five amendments: where the contract is a standard form consumer contract or small business contract, s 23(1) of the Australian Consumer Law (Schedule 2 to the Competition and Consumer Act 2010 (Cth)) voids an unfair term, s 25(1)(b) gives as an example a term permitting one party but not the other to terminate, and s 23(2A) and (2C) attach penalties to proposing or relying on it.

The practical discipline is to read the conditions and the amendments together, as a single document, before any notice is drafted. Where an amendment is ambiguous, the ambiguity is resolved against the party that drafted it, which in most contracts is the principal.

What to check in your own contract

Nine points determine whether a termination will be available, and each should be answered in writing before a notice is issued. What events are defined as default. Whether a show cause step precedes the notice. What the notice must contain. Who may give it, to whom, and by what method. How long the cure period runs, and from when. Whether the right to suspend work for non-payment exists under the contract, separately from the statute. Whether security may be called on default. Whether the dispute resolution clause survives termination. And whether the contract is a construction contract for the purposes of the statutory payment regime, which determines whether the statutory rights are available at all.

A termination-readiness checklist

Before the notice

Four things should be complete before a notice is drafted. The contract must have been read in full, including every amendment. The ground must be stated in one sentence that identifies the clause relied on and the conduct that engages it. The evidence for the ground must be assembled in a form that could be produced to a court, which means contemporaneous records rather than a narrative written this week. And the consequences of terminating must have been worked through, including who will complete the work, what will happen to the plant and materials on site, and what the security position will be.

If any of the four cannot be completed, the honest conclusion is that the position is not ready for a termination notice. Suspension, negotiation, or a show cause notice may each achieve the commercial objective with less exposure.

The notice itself

A termination notice that survives scrutiny does five things. It identifies the contract and the parties. It identifies the clause relied on, by number and by substance. It states the default with precision, including dates, so that the other party could understand what it must do to cure it. It records that the cure period has expired, or states the period allowed where a fresh notice is being given. And it states that the contract is terminated, from a defined date, without ambiguity.

Three inclusions weaken a notice and should be avoided. A list of grievances that does not connect to the clause relied on, which invites the argument that the real reason for termination was something else. A statement that termination is without prejudice to rights, where the contract requires an unequivocal election, because the two positions are inconsistent. And a demand for payment that is not a contractual consequence of the default, which signals that the purpose of the termination is recovery rather than remedy.

After service

The steps after service are as consequential as the steps before it. Secure the site and record its condition. Take possession in the manner the contract permits. Notify insurers. Prepare the schedule of accrued rights and amounts due as at the termination date. Preserve the plant and materials on site, and record their ownership. And issue the notices required by the contract to subcontractors and suppliers where the contract requires it.

Two errors recur at this stage. Continuing to act under the contract after termination — issuing directions, processing claims, or deducting amounts as though the contract remained on foot — is inconsistent with the case being advanced. And failing to record the state of the works at the moment of termination, which is the point at which the value of what remains becomes a question of evidence rather than of fact.

If you receive a notice

A party on the receiving end has a different set of decisions, and they are time-critical. Record the date and manner of service, because every subsequent period runs from it. Read the notice against the clause it relies on and ask whether the ground is stated with enough precision to allow a cure. Decide whether to remedy, and if so, do so in a way that is documented and complete. Preserve the position by responding in writing without conceding that the ground was made out. And obtain advice on the validity of the notice, because the choice between accepting it and rejecting it carries different consequences.

Where the notice is invalid, accepting it as terminating the contract may be an election that gives up the right to say so later. That is why the decision is urgent, and why it should be made by someone who has read the contract — not simply by whoever happened to receive the letter.

WARNING There is no neutral response to a termination notice. Silence, or a letter that neither accepts nor rejects it, leaves the other party free to characterise the position later, and usually to characterise it unfavourably. A short letter reserving rights, sent the day the notice arrives, costs nothing and closes that gap.

Four terminations, and why they failed

The following scenarios are composites, built from the fact patterns that recur in NSW construction disputes. They are illustrations, not accounts of any particular matter, and the names are invented. Each turns on a single point of procedure that could have been checked before the notice was sent.

Scenario one — the principal who terminated before the cure period expired

A principal serves a default notice on a head contractor under a modified AS 4000 contract. The clause requires ten business days to remedy. The contractor responds on day three with a programme for recovery. On day seven the principal issues a termination notice, relying on the same default.

The termination fails, and it fails on one date. The cure period had not expired, so the power to terminate had not arisen. The contractor accepts the termination as a repudiation, claims the profit on the unperformed balance, and the principal spends the next two years arguing about quantum on a contract it had been entitled to end five days later.

The lesson is that the date of the notice is as important as its content. Where the decision has been made, the discipline is to do nothing and let the clock run.

Scenario two — the subcontractor who suspended and then terminated

A subcontractor is owed a certified progress payment. It serves a payment claim, receives no payment schedule, gives the statutory notice, and suspends work two business days later. So far the position is sound. Three weeks later, with no payment, it writes that the subcontract is terminated and removes its plant from site.

The suspension was lawful. The termination was not. Nothing in the Security of Payment Act gives a right to terminate, and the subcontract contained no default clause covering non-payment. The head contractor accepts the termination as a repudiation and counterclaims for the cost of completing the package.

The lesson is that a statutory right must be used for what it authorises. Adjudication, not termination, is the next step after a lawful suspension.

Scenario three — the notice served on the wrong address

A principal terminates a contract by email to the project manager, copied to the contractor's site supervisor. The contract permits notice by hand or post to the address stated in the contract particulars, and requires a copy to the contractor's registered office. The contractor's office never receives the letter.

The notice is ineffective, the cure period never began, and the principal's subsequent exclusion of the contractor from site is a repudiation. The merits of the original complaint do not matter, because the right was never exercised.

The lesson is that service is a condition of the power. The clause should be read for the method, the recipient and the address, and each should be satisfied and proved.

Scenario four — the homeowner who ended the contract by text

A homeowner becomes frustrated with a builder over a six-week delay. She sends a message saying the contract is over and that the builder should collect its tools. The contract is a short residential form with no termination clause. The builder is later shown to have been in breach of the statutory warranties in another respect.

The message is a repudiation by the homeowner. The builder accepts it, claims the balance of the contract price and demobilisation costs, and the homeowner's defect claim becomes a cross-claim in a proceeding she did not want. The defect claim was worth pursuing; the termination destroyed the advantage of being the claimant.

The lesson is that informality is not a defence. A residential contract without a termination clause is still governed by the general law, and the general law requires a ground.

Questions of construction that decide termination cases

Does the clause cover the event?

The threshold question is whether the clause relied on extends to the conduct that has occurred. Contractual powers of termination are construed strictly, and a clause that permits termination for failure to proceed with due diligence does not permit termination for a failure to comply with a payment obligation. Where the conduct crosses several categories, the terminating party should identify the clause that most directly covers it and rely on that clause, rather than on a general default provision.

Where the answer is that no clause covers the event, the ground has to come from the general law instead, and the analysis changes to repudiation or essential breach. That is a more demanding case, and it should be recognised as such before the notice, not after.

Is the power to terminate exclusive?

Some clauses state that the rights they confer are in addition to every other right the law provides. Others are expressed as the only route. The difference changes the sequence of steps. Where the clause is the exclusive route, the terminating party must follow it exactly, and a failure to do so may leave no right at all, even where the underlying breach was serious. Where it is additional, a party may be able to terminate at general law without completing the contractual process, although relying on both without separating the facts is a drafting risk.

Waiver and election

Two doctrines consistently defeat terminations that were sound in substance. Waiver arises where a party has accepted performance that departed from the contract, or has allowed a breach to continue without protest, so that it has lost the right to rely on it. Election arises where a party, faced with a breach, chooses to keep the contract on foot rather than end it, and cannot later change its mind.

Both are facts, and both are established by conduct. A principal that accepted late progress claims for a year and then terminated for late progress claims will have a difficulty. A party that gave a show cause notice, accepted the response, and continued the contract for two months will find it harder to say that its decision to terminate was prompted by the original default.

The practical safeguard is a written record of every reservation. Where a breach is tolerated for commercial reasons, the letter that says so — and says that the right to rely on it is reserved — is the difference between a right that survives and one that does not.

Does the dispute resolution clause survive termination?

Whether the dispute clause survives is a question of construction, and it is answered differently in different contracts. Where it survives, a dispute about the termination itself is likely to have to go through the contractual process — a referral to the superintendent, a notice of dispute, and then mediation or arbitration — before any court or tribunal proceeding. Where it does not survive, the dispute goes directly to the forum that has jurisdiction.

The answer matters because it determines the first step, and taking the wrong first step can be expensive. A party that commences proceedings where the contract requires a notice of dispute may face a stay. A party that follows a contractual process that no longer applies may simply lose time.

Which other machinery survives?

Termination ends the obligations that remain to be performed. It does not necessarily end the clauses that govern the parties' conduct after performance stops. Confidentiality, intellectual property, limitation of liability, indemnities, and the mechanism for finalising the account commonly survive, either because they are expressed to, or because their survival is necessary to give the contract business efficacy. Statutory duties are outside that analysis altogether: s 37 of the Design and Building Practitioners Act 2020 (NSW) imposes a duty of care on a person who carries out construction work, owed to the owner and to subsequent owners, whether or not the work was carried out under a contract with them, so it is untouched by the ending of any contract. The scope of that duty is dealt with in our guide to the statutory duty of care under the Design and Building Practitioners Act 2020 (NSW).

That has two practical consequences. A party cannot assume that termination frees it from the caps and exclusions the contract contains. And a party cannot assume that the machinery for calculating the final account has gone; where a clause survives, the account may still have to be produced in the form the contract requires. Both points should be checked before the notice, because each affects the value of the position being asserted.

Step-in, partial termination and taking work back

How step-in differs from termination

Stepping in means taking part of the work out of the contractor's hands and having it carried out by someone else, while the rest of the contract continues. Termination ends the whole contract. The two remedies are often available on the same facts, and choosing between them is one of the more consequential decisions in a construction dispute.

Step-in is narrower and usually cheaper. Because the contract continues, the contract's machinery for valuation, certification and dispute resolution continues with it. The contractor's accrued rights are dealt with under the contract rather than reconstructed afterwards. And the parties are not forced into the immediate, all-or-nothing contest that a termination produces.

The advantage is not only commercial. A step-in is easier to justify because it is proportionate: the responding party has taken away only as much of the work as the default required. A termination is a total rejection of the other party's performance, and it is scrutinised on that basis. Where the default affects one package of a multi-package project, taking back that package while leaving the rest of the contract on foot is a materially more defensible response than ending the whole engagement.

There is also a timing advantage. A step-in can be implemented on short notice and reversed if the position improves. A termination is, in practical terms, irreversible: once the contract has been brought to an end, the relationship it created cannot be restored by a later change of mind, and the parties' positions are crystallised as at that date.

Partial termination and the conditions that must be met

Some contracts distinguish between terminating the whole of the work and terminating a separable part of it. Partial termination is a useful middle path where the default affects only part of the scope — a single package, a specific building, or a defined separable portion of the works.

For partial termination to be valid, the part selected must be genuinely separable, and the contract must permit it. A party that purports to terminate part of the work where the contract permits only whole-of-contract termination has not terminated anything; the purported partial termination is itself a repudiation. And a party that terminates part of the work while continuing to rely on the contractor for the rest must be prepared to work with that contractor on the remaining scope, which is a practical consideration as much as a legal one.

Four conditions apply to any step-in or partial termination. The event must fall within the clause relied on. The notice requirements must be satisfied, in the same way they must be satisfied for a termination. The substituted work must be priced and recorded so that the final account can be struck. And the responding party must not do more than the clause permits, because a step-in that exceeds the power given is a breach even where the underlying default was real.

The third condition is the one most often neglected. Where a principal engages a replacement without recording the scope, the price, and the reason the original work was taken away, the final account becomes a contest about the principal's conduct rather than about the contractor's default. The record is what allows the principal to recover the excess cost of the substituted work, and without it the entitlement may be impossible to establish.

The superintendent's role and challenging a determination

The dual role and conditions precedent

Most construction contracts place the administration of the contract in the hands of a superintendent, who is named in the contract or appointed by the principal. The superintendent certifies progress payments, assesses extensions of time, values variations, and determines whether work complies with the contract. The role is quasi-judicial in function, but the superintendent is engaged by one party, and that is the source of a great deal of difficulty in practice.

The dual character of the role has two consequences. First, the superintendent must act honestly, impartially in its certifying role, and in accordance with the contract when exercising its functions, and a determination made for reasons other than a contractual assessment is exposed to challenge. Second, the contractor's remedy against a determination it disagrees with is usually contractual and is subject to tight time limits, which is why serving a notice of dispute in time matters more than the strength of the underlying complaint.

Where a contract makes a certificate or a determination a precondition to a right — for example, that the principal may not terminate unless the superintendent has certified a default — the precondition must be satisfied. A party that acts without it has not exercised the right the contract gives, whatever the merits of its position. The discipline is to read the clause backwards: identify the right, then identify every step the contract requires before the right arises, and take each step in order. That is a mechanical exercise, and it decides most procedural challenges.

Challenging a determination

A determination that is wrong is not the same as a determination that is invalid. The first is corrected through the contractual process — a notice of dispute, and then whatever forum the contract specifies. The second may be set aside, but only on limited grounds, such as a failure to comply with the process the contract prescribes, a lack of jurisdiction, or a failure to act in accordance with the contract rather than in accordance with the interests of the party that appointed the superintendent.

The distinction matters because the contractual process usually carries tight time limits. A party that believes a determination is wrong but does not serve a notice of dispute within the period may find that the determination has become final by default, however obviously wrong it was. That outcome is not a comment on the merits; it is the consequence of the contract's own machinery, which the parties agreed to.

Where the superintendent is an employee of the principal, or where the superintendent has an interest in the outcome, a determination is exposed to challenge. That exposure does not make the determination void, but it is a factor in the weight the determination carries, and it is the reason the contract's dispute process exists. The practical lesson for a contractor is to keep the machinery alive: serve the notices, record the reasons for disagreement, and preserve the right to have the matter determined afresh. The practical lesson for a principal is that a determination which looks like advocacy is worth less than one which is made carefully, and may cost more to sustain.

PRACTICE NOTE: The commercial value of a superintendent's determination lies in its timing, not only its reasoning. A certificate issued promptly, with reasons that refer to the clause and the material relied on, is difficult to displace. A certificate issued months late, after the dispute has formed, is treated as a position rather than an assessment.

Possession, plant and materials on termination

On termination, the question of who is entitled to possession of the site, the plant, the materials and the documents is answered by the contract and, where the contract is silent, by the general law. The answer matters immediately, because the parties have to operate on the day the notice takes effect, and the position on the day usually determines the negotiating position for everything that follows.

Three categories of property have to be distinguished. The site itself remains the principal's, and the contract will usually require the contractor to leave and to give up possession. Plant and equipment brought to the site by the contractor usually remains the contractor's property, subject to any right of retention the contract gives the principal while money is owed. And materials on site may have been paid for under a progress payment, in which case ownership may already have passed, or may remain with the contractor or its suppliers. One statutory interest sits on top of that analysis: once a progress payment becomes due and payable, s 11(3) of the Security of Payment Act gives the claimant a lien over any unfixed plant or materials it supplied for use in connection with the work, subject to the priority rules in s 11(4) to (6); the lien confers no right against a third party who owns the plant or materials (s 11(5)).

The practical discipline is to record the position before anything is moved. A dated photographic record and a written schedule of what is on site, whose it is, and what condition it is in will do more for the eventual outcome than any submission drafted later. Where the contract permits the principal to retain possession of plant and materials pending finalisation of the account, that right should be exercised expressly rather than assumed, because an unexercised right is easy to lose. Where the counterparty is a company in administration, s 440B of the Corporations Act restrains a third party such as the contractor from taking possession of property in the company's possession, or used or occupied by it, without the administrator's consent or the Court's leave, which changes what may be removed on the day.

Where the works are to continue with a replacement contractor, the state of the works at the moment of termination becomes the baseline against which the replacement's price is measured. That is why the record should be made before, not after, the replacement is engaged — and why both parties have an interest in making it accurately.

Retention of title to materials and plant

Where title sits before termination

Ownership of materials and plant on a construction site is determined by the contract, by the terms on which the supplier sold them, and by the general law of property. Those three sources do not always produce the same answer, and the difference matters most at the moment a payment stops.

Where a contract provides that ownership of materials passes to the principal on payment, the position follows the payment. Where materials have been incorporated into the works, ownership generally passes with the incorporation, because the materials have become part of the land. And where materials remain in a compound or a store, ownership may still sit with the contractor or with the supplier, depending on how they were supplied.

Retention of title clauses and the supplier's position

A supplier that sells materials on retention of title terms retains ownership until payment in full. Such a clause is enforceable, but it is weaker in construction than suppliers usually assume. Once materials have been incorporated into a building, the clause cannot be relied on to reclaim them, because the materials no longer exist as identifiable goods. And where the materials have been on-sold to a principal who paid for them in good faith, the clause may not defeat that payment.

The practical consequence is that a supplier's real protection is registration under the Personal Property Securities Act 2009 (Cth) (the PPS Act), not the clause in its terms of trade. A retention of title arrangement is a security interest (s 12(1) of the PPS Act); an unperfected security interest vests in the grantor on winding up or administration (s 267 of the PPS Act); and a security interest perfected only by a registration made too late vests under s 588FL of the Corporations Act. A supplier that has not registered may find that its retention of title is worth very little in an administration, however clearly it was expressed.

Practical steps on termination

Three steps preserve the position. Establish what materials and plant are on site, whose property they are, and whether payment has been made for them, and record the answer in writing at the moment of termination. Check whether the contract contains a right to retain possession pending finalisation of the account, and exercise it expressly if it does. And notify any insurer whose policy covers materials on site, because damage to materials that are the subject of a dispute may fall within the cover.

The record is what converts a disputed claim about materials into a question of fact. Without it, a party asserting ownership of materials on site has to prove its case, and the party in possession holds the advantage.

Termination and insolvency

Termination clauses and external administration

Insolvency — of a head contractor, a subcontractor or a supplier further down the supply chain — is the trigger most likely to produce a termination in practice, and it is the one where the contract's terms are least reliable. A clause permitting termination on the appointment of an administrator may not operate as drafted once the Corporations Act applies.

Three consequences follow from the statutory framework. A proceeding in a court against the company, or in relation to any of its property, cannot be begun or proceeded with during the administration without the administrator's written consent or the leave of the Court, which is the effect of s 440D of the Corporations Act. Enforcement of rights in the company's property is separately restricted by s 440B, which restrains a third party from taking possession of property in the company's possession, or used or occupied by it, without that consent or leave. A contractual right to terminate by reason of the company entering administration is caught by s 451E, which bars enforcement during the stay period in s 451E(2) and, under s 451E(4), indefinitely afterwards where the reason relied on is the company's financial position before the end of that period or the fact that it was under administration. The Court may lift the stay under s 451F. And the interests of other creditors become directly relevant to any step the terminating party takes.

Put shortly, the clause records what the parties intended; the Corporations Act decides what can be done about it now.

What to do when a counterparty is failing

The sequence matters more than the individual steps, and the sequence is driven by how much time there is.

First, establish the facts. A missed payment and a rumoured cash problem are different from the appointment of a voluntary administrator or liquidator. Company searches, a search of the Personal Property Securities Register, and the status of any proceedings provide the answer quickly.

Second, decide whether to continue performing. Continuing work for a counterparty in difficulty increases exposure, because new debt ranks behind existing obligations in an administration. Stopping without a contractual or statutory right creates a different problem, which is why the decision is not automatic.

Third, protect the position. Security held, amounts due, and any right to suspend under the Security of Payment Act are the levers available, and each has its own timing. One closes if the counterparty is a corporation that goes into liquidation: s 32B of the Corporations Act prevents a corporation in liquidation from serving a payment claim or taking action under the Act, and withdraws any adjudication application not finally determined on that day.

Fourth, take advice before terminating. The interaction between the contract and the insolvency framework is one of the few areas of this subject where the sequence of steps changes the remedies available, and where a step taken a week too early can be difficult to unwind. Our commercial law advice team deals with that interaction, and the related topic of recovery from a company in difficulty is dealt with in our guide to statutory demands in NSW construction.

Termination in residential building work

Residential contracts are a distinct case, and the difference is not merely procedural. Homeowners and builders operate under a statutory warranty regime, an insurance scheme, and a dispute forum that is designed for the residential context. The forum is the NSW Civil and Administrative Tribunal (NCAT), and how it handles building matters is set out in our guide to NCAT and the Building Commission. The sections of this guide that precede this one assume a commercial contract with a superintendent and a security regime; most residential contracts have neither.

A homeowner terminating a builder

A homeowner's right to terminate depends on the contract and on the statutory warranties. The warranties in s 18B of the Home Building Act 1989 (NSW) are implied into every contract for residential building work, and s 18BA(1) provides that a breach of a statutory warranty constitutes a breach of the contract even where the written terms say nothing about it, subject to the duty to mitigate in s 18BA(1)(a) and to the onus in s 18BA(1)(b), which puts proof of a failure to mitigate on the party alleging it.

Terminating for defective or incomplete work therefore has a statutory foundation that a commercial contract may lack. The practical constraints are different. Residential contracts are often short and poorly drafted, which means the notice machinery may be absent or informal, and a homeowner who takes the wrong step can create a claim against themselves. Section 7 of the Home Building Act requires a written, dated and signed contract containing the licence number, a description of the work, plans and specifications, the price if known, the statutory warranties, the cost of insurance and a statement that the contract may be terminated in the circumstances provided by the general law (s 7(2)(i)), subject to the contract-price threshold in s 7(1A) and the exceptions in s 7(8). A failure to comply with s 7 does not, of itself, close the statutory payment route: s 8(2)(a) of the Security of Payment Act is engaged by non-compliance with s 4 of the Home Building Act, which deals with unlicensed contracting.

The safer sequence for a homeowner is to document the defect or the non-completion, give written notice of what is required, allow a defined period, and take advice before treating the contract as at an end. The route to a remedy is usually an NCAT building dispute application rather than a termination at all. Under Part 3A of the Home Building Act, the Tribunal’s jurisdiction over a building claim is capped at $500,000 (s 48K), a claim for breach of statutory warranty must be lodged within the warranty period in s 18E (s 48K(7)), and s 48MA makes rectification of defective work by the responsible party the preferred outcome.

A builder terminating for non-payment

A builder owed money on a residential project faces the same statutory position as any other claimant. The Security of Payment Act provides the suspension right. A valid payment claim is the threshold, but s 8(2) closes the route in two cases: where the construction contract does not comply with s 4 of the Home Building Act, and where the work is residential building work done in contravention of s 92 of the Home Building Act.

Two features of the residential context complicate it. The homeowner may not understand the process, and a builder that suspends work on an occupied home faces practical pressure to continue. And the insurance scheme's requirements mean that cessation of work has consequences for cover, which is a consideration a commercial project does not carry.

The warranty and insurance position

Where the position is not resolved, the consequence for the homeowner is a claim against the builder, and often against the insurance scheme that stands behind residential work. The fund's operation, the circumstances in which a claim may be made, and the limits that apply are dealt with in our guide to the Home Building Compensation Fund.

The relevance to termination is this: a homeowner who terminates without a proper basis may lose the benefit of the insurance position, because the scheme responds to defined events: non-completion of the work, or an inability to have a breach of statutory warranty rectified or compensated, because of the contractor’s insolvency, death or disappearance (s 99(1) of the Home Building Act), the deemed insolvency in s 101 where a contractor’s licence is suspended following an unsatisfied building claim order, and the periods of cover in s 103B, with no extended claim period for loss from non-completion under s 103BB(2A). That makes the decision more consequential than it first appears, and it is a reason to take advice before the notice rather than after it. Regulatory complaints sit alongside the civil claim and are dealt with by the Building Commission NSW, while the civil claim itself is the subject of our guide to NSW building defects, warranties and duty of care.

Termination by agreement and exit strategies

Deed of settlement and mutual release

Most construction contracts that end early are not terminated. They are brought to an end by agreement, recorded in a deed of settlement or a termination agreement, under which each party gives up its claims and the account is closed.

That route has three advantages. It avoids the risk that the termination was wrongful, because neither party has to establish a ground. It allows the parties to settle the final account at the same time, which a contested termination does not. And it can be executed as a deed, which means it binds without consideration and carries a longer limitation period (twelve years under s 16 of the Limitation Act 1969 (NSW), against six under s 14 of the Limitation Act for a contract) — a point that matters where the compromise involves a promise to do something in the future.

The drafting has to be precise about what is being released, what is being paid, and what happens to security and to the works. Vague releases are the source of a second dispute, and the whole purpose of the exercise is to avoid one. Execution must satisfy s 38 of the Conveyancing Act 1919 (NSW) for individuals, or s 127 of the Corporations Act for a company.

Novation and assignment

Where a project is to continue rather than stop, the alternative to termination is to change who performs it. Novation replaces one party with another by agreement of all three; assignment transfers the benefit of a contract, subject to the contract's own restrictions.

Novation is the more common route in construction, because the new party usually has to assume the obligations as well as the benefits, and because the contract will typically prohibit assignment without consent. Both routes require documentation, and both should deal with accrued rights, security, and the position of subcontractors beneath.

Practical exit without legal termination

There is a third route that parties use constantly and describe less often. The work stops, the parties agree that it has stopped, and the final account is settled without any document purporting to terminate the contract.

That outcome is often the best available. It avoids the question of who was entitled to end the contract, it preserves the goodwill that may be needed on the next project, and it usually costs less than the alternatives. Its risk is incompleteness: where the parties do not record what has been settled, the unresolved items resurface later, and by then the evidence is stale.

Where a practical exit is chosen, the minimum documentation is a schedule of what is agreed, what is reserved, and what is released. For matters of any size, advice should be taken before the arrangement is concluded rather than after, and the range of processes available for reaching that arrangement is set out in our guide to alternative dispute resolution in NSW.

A decision framework before you issue the notice

Seven questions

The framework is deliberately short, because the decision has to be made under time pressure and on incomplete information.

Which source gives the right to terminate — the contract, the general law, or a statute?
Does the ground exist as a matter of fact, and can it be evidenced today?
Has the contract been read for the notice requirements, including the address, the form and any precondition such as a show cause step?
Has the cure period been allowed to run, and if not, how much time remains?
What happens to the works, the plant and the security on termination, and who will complete the project?
What accrued rights would be lost or preserved?
What is the realistic cost of the termination being held wrongful, against the benefit of ending the contract now?

Any question that cannot be answered is a reason to pause. The pause costs little; the alternative does not.

The first 48 hours

Where a termination notice is issued, four steps should be taken immediately. Secure the site and record its condition, with dated photographs and a written schedule of the works and materials. Confirm the notice was served in accordance with the contract and retain proof of service. Prepare the schedule of accrued rights and amounts due as at the termination date. And notify insurers and any guarantor whose position is affected.

Where a termination notice is received, the steps are those in the checklist above: record the date and manner of service, test the notice against the clause it relies on, send a short written reservation of rights the same day, and obtain advice on validity before either accepting or rejecting it. Each step is time-critical, because every response period runs from the date of service.

Termination is not a step to be taken on a busy Friday afternoon. It is the point at which a commercial dispute becomes a legal proceeding, and it deserves the discipline that description implies.

What the dispute looks like once the notice is issued

A termination that is contested becomes a proceeding, and knowing the shape of that proceeding before issuing the notice is part of deciding whether to issue it at all.

The claim is usually framed in the alternative. The terminating party pleads that it was entitled to terminate on the ground relied on, and, in the alternative, that the other party had repudiated the contract so that the same result followed. The other party pleads that the termination was wrongful, that it was itself entitled to treat the termination as a repudiation, and that it is therefore the innocent party entitled to damages. Both parties commonly claim the cost of completing or of the unperformed balance, which means the same project is valued twice on different assumptions.

The evidence divides into three streams. The contractual stream establishes the right and its conditions: the contract, the amendments, the notices, and the proof of service. The factual stream establishes whether the ground existed: site records, programme updates, correspondence, and the contemporaneous documents that show what each party knew and when. The expert stream quantifies: the state of the works, the cost of completion, and where delay is in issue, its cause and effect.

Four interlocutory questions arise early and each carries cost. Whether the contract's dispute resolution clause survived the termination, which determines whether the matter can be commenced at all before the contractual process is exhausted. Whether security may be called pending the outcome, which is frequently the difference between a claimant who can fund the proceeding and one who cannot. Whether the works are to be completed by a replacement contractor before the hearing, which destroys evidence as it proceeds. And whether any part of the dispute belongs in a different forum, because a payment claim served before termination may engage the statutory regime independently of the contractual claim.

The practical consequence is that the notice is not the beginning of a process that then takes its course. It is the point at which a set of interlocking decisions is made, most of them irreversible, and the discipline of working through them before the notice is issued is what distinguishes a termination that holds from one that reverses the parties' positions.

Costs and proportionality in a termination dispute

The cost of a contested termination is not proportionate to the amount in dispute, and parties consistently misjudge it.

Two features drive the figure. The first is that both sides claim, so the proceeding includes a claim and a cross-claim, each with its own pleadings, evidence and expert material. The second is that the central question is a factual one about conduct over time, which cannot be resolved from documents alone and therefore requires the lay evidence of the people who were on the project.

Three practical consequences follow for a party deciding whether to terminate. A termination that is likely to be contested should be budgeted as a proceeding rather than as a step. The records that will decide the proceeding are the ones being created now, during the period of difficulty, rather than the ones that will be assembled afterwards. And where the cost of the proceeding would exceed the value of the position being asserted, a negotiated exit — a deed of settlement, a novation, or an agreed cessation — returns more than a termination that is legally sound and commercially ruinous.

A contested termination taken to a final hearing involves pleadings, lay evidence and expert evidence on both sides, and its likely cost and duration should be estimated for the particular matter before the notice is issued. An adjudication under the Security of Payment Act, by contrast, runs on a statutory timetable: the adjudicator must determine the application within 10 business days after notifying the parties of acceptance, unless the parties agree to more time (s 21(3)). That gap is the strongest argument for exhausting the statutory route first.

How Merlo Law can help

Merlo Law advises NSW principals, head contractors and subcontractors on whether a construction contract may be terminated, on the notice and cure machinery, and on the claims that follow a termination. In many matters the advice is that the contract should not be terminated at all, and what should be done instead.

We act through our building and construction disputes team, and where the dispute is a payment dispute, through our security of payment advice practice. Where proceedings are likely, the matter runs through our commercial litigation team. To have a proposed termination assessed before the notice is issued, request a consultation.

PRACTICE NOTE: The most useful instruction we receive is a draft notice sent before it is issued. Reading it against the clause, the cure period and the evidence takes an hour, and it is the cheapest hour in the matter.

If you have received a notice rather than drafted one, send it to us the day it arrives, with the contract and any amendments. The response period runs from the date of service, and the first letter you send will shape everything that follows.

Conclusion

Termination is a legal act with commercial consequences that outlast the dispute. The right has to come from somewhere, the notice has to satisfy the contract, and the ground has to be evidenced. Where any of the three is uncertain, the disciplined course is to suspend, document, and take advice — and to remember that a termination issued without a right hands the claim to the other side.

The matters that end well are rarely the matters where the strongest letter was sent. They are the matters where the party understood, before it acted, which right it was exercising, what the contract required of it, and what it stood to lose if the answer was wrong. For the wider framework these questions sit in, see building and construction law in NSW: the complete overview.

FAQs

What is a valid ground for contract termination in NSW?

Repudiation, breach of an essential term, a sufficiently serious breach of a non-essential term, a contractual default unremedied after the required notice and cure period, insolvency as defined in the contract (subject to the statutory stay once an administrator is appointed), and an express termination for convenience clause where the contract contains one. A statutory right to suspend work for non-payment exists, but it is not a right to terminate.

Can I terminate a construction contract in NSW because the project is losing money?

No. There is no general right to terminate for convenience. Ending a contract because it has become uneconomic is a repudiation unless the contract contains an express convenience clause.

What happens if I terminate without a right to do so?

The termination is itself a repudiation. The other party may accept it and claim damages for the unperformed work, the profit it would have earned, and the cost of demobilisation. It may also keep any security it holds, subject to the terms of the contract.

Do my accrued rights survive termination?

Amounts due for work performed and claims for breaches that had already occurred generally survive. The mechanism for pursuing them may change, so the position should be assessed before the notice is issued.

Can I call a bank guarantee at the same time as terminating?

The right to call depends on the guarantee and the contract, not on the strength of the termination. A guarantee payable on demand must be honoured by the bank regardless of the dispute, so establishing the default and following the notice procedure first is the safer sequence.

I have received a termination notice. What should I do?

Record the date and manner of service, read the notice against the clause it relies on, and send a short letter reserving your rights the same day. Do not accept or reject the notice until you have taken advice on whether it is valid, because either response can be an election you cannot later undo.

What should I do first if a counterparty becomes insolvent?

Establish the facts, decide whether to continue performing, protect any security or amount due, and take advice before terminating. The interaction between the contract and the insolvency framework changes the sequence of steps.

This guide is for informational purposes only and does not constitute legal advice. For advice tailored to your specific circumstances, please contact Merlo Law

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