Must a QLD Body Corporate Committee Pay an Unapproved Builder Variation?
- John Merlo
- 1 day ago
- 14 min read
Key Takeaways
Contractors typically cannot lawfully commence variation work under regulated domestic building contracts without written agreement from the body corporate.
Committees may lack the statutory authority to approve building variations if the additional cost pushes the total project beyond the relevant committee spending limit.
While an unwritten variation may breach statutory requirements, a builder might still pursue a quantum meruit claim for reasonable payment if the body corporate knowingly accepts the benefit of the completed work.
Navigating an unapproved variation dispute requires balancing strict procedural limits under the Body Corporate and Community Management (Standard Module) Regulation 2020 with the practical risk of the builder abandoning the site.
A remedial builder has just submitted an invoice containing a $25,000 unapproved variation for latent concrete spalling, accompanied by an immediate ultimatum: pay today, or they down tools and walk off the site. The scaffolding is already up, the common property is exposed to the weather, and the committee's sinking fund budget is suddenly in jeopardy. Paying an unapproved invoice on the spot may breach your statutory spending limits, exposing the committee to serious compliance risks, but refusing outright might trigger a costly site abandonment and project delay. This guide explains how to secure the common property site and navigate the strict legal boundaries between a body corporate committee's authority and a contractor's financial demands.
Immediate Steps When the Builder Threatens to Walk Off
You are standing on exposed common property facing a contractor who is holding the completion of your building works to ransom over missing paperwork. At this stage, the question is how the committee should respond today to secure the site and halt further unapproved work without immediately conceding liability. This section maps the exact procedural triage required right now to protect the body corporate's position.
Securing the Common Property Site While Assessing the Unapproved Work
The committee must immediately issue a formal written direction to the builder to cease the disputed variation work. You must formally document the current state of the site using date-stamped photographs and independent building reports to establish a factual baseline before any further changes occur. Next, confirm whether the executed work genuinely falls under the scope of body corporate common property maintenance or if it extends beyond the body corporate's statutory obligations.
Issuing a blanket "stop work" direction across the entire site—rather than just targeting the unapproved variation—can inadvertently expose the body corporate to claims for delay damages under the contract. The written direction must be strictly limited to the disputed scope.
Failing to act deliberately in these initial hours may increase the risk of committee member exposure if the committee's conduct falls short of the good faith and due diligence standard required under section 101A of the BCCM Act. While that provision shields committee members from civil liability for acts done in good faith and without negligence, a committee that recklessly disregards its obligations may forfeit that statutory protection, potentially exposing individual members to claims by lot owners for resulting financial loss.
Separating the Committee's Statutory Limits from the Builder's Restitutionary Claims
Resolving an unapproved variation requires separating three distinct legal frameworks that frequently collide during building disputes.
First, the statutory spending limits under the Body Corporate and Community Management Act 1997 (Qld) strictly cap the committee’s legal authority to approve expenditure. Second, the contractual requirements under the Queensland Building and Construction Commission Act 1991 dictate exactly how variations must be documented to be enforceable. Third, the equitable doctrine of quantum meruit — a restitutionary remedy related to, but distinct from, the broader principle of unjust enrichment — acts as a separate exposure channel that builders often use to bypass both the contract and the statute.
A body corporate may successfully prove that a variation was contractually invalid, yet still face liability if a tribunal determines the builder is entitled to restitutionary relief through quantum meruit. Winning under one framework does not extinguish the risks posed by the others.
Enforcing the Written Agreement Requirement Under the QBCC Act
Under regulated Queensland domestic building contracts, a builder cannot lawfully commence variation work without the written agreement of the building owner.
Section 40 of Schedule 1B of the Queensland Building and Construction Commission Act 1991 expressly states that the building contractor must not start to carry out any domestic building work the subject of the variation before the building owner agrees to the variation in writing. The Queensland Building and Construction Commission oversees this statutory framework, which is designed to ensure building owners are not ambushed by undocumented cost blowouts.
However, the enforceability of this statutory protection depends on how a tribunal views the body corporate's conduct; courts and tribunals may sometimes allow contractors to recover costs on an equitable basis if the body corporate knowingly allowed the work to proceed, limiting the effectiveness of this clause.
Why the Committee Cannot Simply "Sign Off" on the Variation
The builder is likely pressuring your body corporate manager or committee chairperson for a quick signature to keep the project moving, warning of expensive delay costs if you refuse. You cannot simply sign off on the variation to make the problem go away if the new cost breaches your statutory ceiling. This section explains the rigid statutory spending limits that restrict your committee authority and protect the body corporate from unlawful financial commitments.
Aggregating Variation Costs Under the Single Project Statutory Rule
Under Queensland law, a variation is aggregated with the original contract sum to determine if the total expenditure constitutes a single project for the purpose of calculating a body corporate committee's spending limit. Section 172 of the Standard Module (Body Corporate and Community Management (Standard Module) Regulation 2020) establishes this statutory liability threshold, detailing how expenditure is legally grouped. This link directs the reader to the binding statutory provision governing the single project aggregation rule for committee spending limits. As verified in the legislation, "if a series of proposals forms a single project, the cost of carrying out any 1 of the proposals is taken to be more than the relevant limit for committee spending if the cost of the project, as a whole, is more than the relevant limit."
Therefore, a committee cannot lawfully approve a building contract variation if the variation causes the total cost of the project to exceed the body corporate committee spending authority. The effectiveness of this statutory limitation in restricting expenditure depends on whether specific emergency spending exceptions at section 172 of the Standard Module apply to the specific repair.
The Trap of "Apparent Authority" When Managers Sign Variations
Builders frequently assume that verbal or ad-hoc written approval from the chairperson or the body corporate manager is sufficient to proceed with a variation.
However, this assumption creates a dangerous trigger for disputes. If the approval for the variation actually required a general meeting resolution due to statutory spending caps, the manager or chairperson often lacks the actual authority to bind the body corporate.
In practice, this mismatch plays out with depressing regularity on remedial building sites. The on-site body corporate manager — who may have day-to-day conduct of the project and be the builder's primary point of contact — verbally agrees to a scope extension during a site meeting, sometimes without even informing the full committee. The builder then treats this as authorisation and proceeds. When the invoice arrives and the committee realises it exceeds the statutory spending limit, the body corporate refuses to pay, and the builder cries foul.
The legal reality is blunt: a body corporate manager's engagement is governed by their service agreement, which derives its authority from the BCCM Act and the applicable regulation module. That agreement almost never confers the power to commit the body corporate to expenditure exceeding the committee's spending limit, let alone expenditure requiring a general meeting resolution. A verbal nod on a scaffold does not amount to a resolution of the body corporate. Adjudicators and Queensland Civil and Administrative Tribunal (QCAT). members tend to look at the actual authority conferred by the legislation and the body corporate's own resolutions, not at what the builder assumed.
The concept of "apparent authority" — where a third party reasonably relies on a representation that an agent has authority — is more limited in the body corporate context than builders expect, because the spending limits under the regulation module are established by publicly accessible legislation, and a body corporate's specific spending limit — whether the statutory default or a figure set by ordinary resolution — can be verified through a body corporate records search. The builder is, at least in theory, capable of confirming the committee's authority before commencing work.
That said, the position is not entirely risk-free for the body corporate. If the committee or its manager has a pattern of approving expenditure and the builder has relied on that course of dealing, a tribunal may be more sympathetic to the builder's argument that it was reasonable to proceed. The practical lesson is immediate: the committee should confirm in writing to the builder at the outset of any contract — and repeat the instruction each time a variation is raised — that no person on site, including the body corporate manager or chairperson, has authority to approve any variation unless it is confirmed by a formal written committee resolution or, where spending limits require it, by general meeting resolution. In these scenarios, a committee must quickly clarify the limits of its agency and seek body corporate legal advice.
Triggering the Major Spending Quota and the Two-Quote Mandate
Even if a committee stays within its general spending limit, a variation might breach a second statutory trap. If an unapproved variation pushes a project's total cost into the major spending limit, the body corporate faces an immediate quotation hurdle.
Under section 173 of the Standard Module, where a motion at a general meeting proposes work exceeding the relevant limit for major spending, the owner of each lot must be given copies of at least 2 quotations for carrying out the work or supplying the personal property or services. This link provides the statutory requirement for bodies corporate to obtain two quotations for major spending. Consequently, if a contract variation pushes a project into the major spending threshold, the body corporate must obtain at least two quotations unless statutory exceptions apply.
Navigating the Builder's Restitutionary Claim
The builder may argue that because the body corporate now has a repaired slab or waterproofed roof, they must be paid for the reasonable value of that work, regardless of the missing paperwork or committee spending limits. At this stage, the dispute shifts from what the building contract says to what is considered fair under restitutionary principles. This section explores how the doctrine of quantum meruit threatens the body corporate's position and may compel payment even for unapproved work.
Analysing the Builder's Equitable Quantum Meruit Threat
A quantum meruit claim functions as a restitutionary demand for reasonable payment for work performed, typically invoked when contractual variation procedures were breached but the body corporate still received a material benefit.
Even when a builder breaches Schedule 1B of the QBCC Act by failing to secure written approval for a variation, they may still seek recovery through the Queensland Civil and Administrative Tribunal under the equitable doctrine of quantum meruit. This link directs readers to the tribunal with primary jurisdiction over domestic building disputes and equitable restitution claims in Queensland.
The builder relies on this doctrine to argue that it would be unconscionable for the body corporate to retain the benefit of the completed variation work without providing reasonable compensation. While quantum meruit and unjust enrichment are related concepts, they are technically distinct under Australian law: quantum meruit focuses on the reasonable value of work performed, whereas unjust enrichment is a broader equitable principle concerned with reversing benefits unfairly retained. If the tribunal determines the builder's equitable claim is valid, it can order the body corporate to pay a reasonable sum, potentially bypassing both the contractual prohibitions and the committee’s statutory spending limits.
The Risk of Knowingly Accepting the Benefit of Unapproved Works
When assessing quantum meruit claims, tribunals may carefully examine whether the body corporate knowingly accepted the benefit of the unapproved variation.
For instance, consider a committee managing a major body corporate building defect claim involving serious water ingress. During the remediation, the builder identifies latent damage and waterproofs an extra 50 square metres of a common property balcony without submitting a written variation.
The committee observes the work happening over several days but refuses to pay the subsequent invoice because no formal approval was given. In this scenario, the builder might successfully argue that because the committee watched the work occur and chose to accept the benefit of the waterproofing rather than stopping the contractor, an order for reasonable payment on a quantum meruit basis may be justified.
Strategic Options for Resolving the Variation Dispute
The site is currently paused, the builder is demanding payment, and the committee's spending authority is exhausted. Now you must decide on a resolution pathway that satisfies the builder without violating the strict spending rules of the BCCM Act. This section details the practical settlement mechanisms and general meeting procedures required to legally resolve the impasse and get the building works finished.
Negotiating a Strategic Settlement Without Breaching Committee Limits
Separate the approved original scope from the disputed variation to ensure undisputed progress payments can continue without legally validating the unapproved works.
Negotiate a reduced settlement amount for the variation based on the builder's failure to follow statutory processes, acknowledging the risk of a restitutionary quantum meruit claim.
Consult BCCM Commissioner dispute resolution pathways if the builder's demands remain unreasonable or if conciliation is required.
Review guidance on entering a lot or exclusive use area if the builder attempts to weaponise site access or restrict owner entry to pressure the committee. This link connects readers to the BCCM Commissioner's guidance on accessing lots, which is often required during urgent variation works.
Managing the 21-Day Delay for an Extraordinary General Meeting
If a negotiated settlement for the unapproved variation still exceeds the committee's strict spending limits, a body corporate general meeting Queensland must be convened to seek lot owner approval.
Under the Body Corporate and Community Management Act 1997, there is a minimum 21-day statutory notice period required to convene an extraordinary general meeting for a Queensland body corporate. This link connects to the primary governing legislation for all community titles schemes in Queensland. The reality is that building works may need to remain paused during this 21-day window unless the committee can strictly establish that an emergency spending exception applies or an adjudicator’s order is obtained. If your committee is unsure how to navigate this mandatory delay period without breaching the building contract, you should contact Merlo Law for strategic advice.
Drafting Pre-Approved Contingency Sums for Future Defect Rectification
A preventative legal strategy for major building works involves drafting motions that authorise specific, pre-approved contingency sums for latent defects.
When running a major repair contract, the initial general meeting motion should include a delegated contingency authority. The critical point is how the motion is worded. There is no express provision in the BCCM Act or the Standard Module for a generic "contingency fund" or "rainy day fund" — adjudicators have consistently treated open-ended or vaguely worded spending authorisations with suspicion. A motion that simply says "the committee may spend up to $X on unforeseen works" without further specificity risks being challenged as unreasonable or insufficiently certain. What works in practice is a motion that is anchored to a defined scope and a specific project.
The motion should be structured along these lines: it authorises the body corporate to engage a named contractor (or a contractor to be selected in accordance with a defined process) to carry out specific remedial works at a stated contract sum, and further authorises the committee to approve variations to the contract up to a stated contingency amount — expressed either as a fixed dollar figure or as a percentage of the contract sum — provided the variation relates to latent defects or concealed damage discovered during the course of the approved works and the variation is necessary to complete the remedial scope.
The explanatory notes accompanying the motion should explain why a contingency is necessary — for example, that the building is of a certain age, that invasive investigation has been limited, or that the consulting engineer's report identifies a probability of concealed damage — so that lot owners are voting with a clear understanding of the risk.
The reason this structure survives scrutiny is that the lot owners are not giving the committee a blank cheque. They are authorising a defined additional spend for a defined purpose connected to a specific project. The committee's authority is bounded: if a variation falls outside the scope of latent defects within that project, the contingency does not cover it and a further resolution is needed. For the two-quotation requirement under section 173 of the Standard Module, the contingency amount should be included in the total project cost disclosed in the motion, and two quotations for the primary works should be circulated to owners in the usual way. The explanatory notes should address why obtaining two quotations for an as-yet-undiscovered latent defect variation is not practicable, which in most cases it genuinely is not — you cannot quote for what has not yet been found.
In practice, a well-drafted contingency authority of 10 to 20 per cent of the primary contract sum is common on major remedial projects involving concrete cancer, waterproofing failures, or facade rectification, where the probability of encountering additional concealed damage is high. This mechanism provides the committee with pre-authorised funds specifically allocated for unavoidable variations, ensuring that unexpected but necessary repair work does not immediately breach the committee's spending limit or trigger a mandatory 21-day delay. Without it, a committee managing a complex defect rectification is almost guaranteed to find itself in exactly the unapproved variation standoff described in this guide.
Conclusion
When a remedial builder issues an ultimatum over an unapproved variation, the body corporate committee is thrust into a high-stakes conflict between the urgent need to secure exposed common property and the rigid spending limits imposed by the BCCM Act. The pressure to simply sign the paperwork and keep the project moving is immense.
However, as this guide has demonstrated, approving expenditure beyond your statutory authority can expose committee members to compliance risks, while relying solely on the QBCC Act's written variation requirement might fail to protect the body corporate from restitutionary quantum meruit claims. You now understand how variations are aggregated into a single project limit, the mandatory 21-day notice period required for an EGM, and the risks of knowingly accepting the benefit of unapproved work.
Before you issue a final decision to the builder or convene an extraordinary general meeting, the committee must clearly define the precise scope of the unapproved work and seek legal confirmation on whether an emergency spending exception applies.
FAQs
Can a builder legally start a variation without the committee's written approval in Queensland?
Under Schedule 1B, section 40(5) of the Queensland Building and Construction Commission Act 1991, a builder must not commence variation work on a regulated domestic building contract without the building owner's written agreement. However, tribunals may still consider equitable claims if the body corporate knowingly accepted the benefit of the unapproved work.
What happens if an unapproved variation pushes the total project cost over our committee spending limit?
Under section 172(2) of the Standard Module, a committee cannot lawfully approve a building contract variation if it causes the total cost of the single project to exceed the committee's spending authority. In these circumstances, the committee typically must convene a general meeting to seek lot owner approval for the additional expenditure.
Is a body corporate still liable to pay if we never signed the variation document?
While the lack of a signed variation document breaches statutory requirements, a builder might still pursue recovery under the restitutionary doctrine of quantum meruit. If a tribunal determines that the body corporate received and accepted the benefit of the completed work, it can order reasonable payment for the value of the work performed despite the procedural defect.
Can the body corporate manager or chairperson approve a variation on site?
A body corporate manager or chairperson generally lacks the actual authority to bind the body corporate to a variation if the cost exceeds the statutory committee spending limit. Builders who rely on verbal or ad-hoc written approvals from managers may find those approvals challenged if a general meeting resolution was legally required.
How long does it take to get lot owner approval for an unexpected variation?
If a variation exceeds the committee's spending authority and no emergency exception applies, an extraordinary general meeting must be convened to approve the expenditure. Under the BCCM Act, an EGM requires a minimum statutory notice period of 21 days, during which the relevant building works may need to be paused.
How many quotes do we need if a variation pushes our project into the major spending limit?
Under sections 173(1) and (2) of the Standard Module, where a motion at a general meeting proposes work that exceeds the relevant limit for major spending, the owner of each lot must be given copies of at least two quotations for carrying out the work. If the motion is proposed by the committee, the committee must obtain the quotations. This requirement applies unless the exceptional circumstances exception under section 173(6) is met, in which case a single quotation is sufficient.
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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