Construction Contract Disputes — Brisbane Lawyers

Construction contracts are some of the most complex commercial agreements in use — and disputes are common. Variations, delays, defects, payment claims, and termination disputes can arise on any significant project. Whether you are a principal, contractor, or subcontractor, getting the legal framework right from the start — and responding correctly when a dispute arises — can be the difference between a project that delivers value and one that destroys it. Boss Lawyers acts in construction contract disputes across Queensland.

Common Construction Contract Disputes

The disputes Boss Lawyers regularly handles in the construction context include:

• Variation disputes: Whether a variation was authorised, whether it falls within the scope of the original contract, and what it should cost
• Delay and extension of time claims: Who caused the delay, whether the contractor is entitled to an extension of time, and whether liquidated damages are payable
• Defects: Whether the work complies with the contract, building code, and applicable standards — see our building defects page
• Payment claims: Disputes about progress claims, final payment, retentions, and security — see our security of payment page
• Termination disputes: Whether a party had the right to terminate, the consequences of wrongful termination, and the basis for calculating termination costs
• Design and construct disputes: Allocation of design risk, fitness for purpose obligations, and liability for design errors

Understanding Standard Form Contracts: AS 4000 and AS 2124

Most significant construction contracts in Australia are based on or derived from the Australian Standard (AS) suite of contracts:

• AS 4000-1997 (General Conditions of Contract): The most widely used standard form for commercial construction in Australia. It is a balanced contract with detailed provisions for variations, extensions of time, liquidated damages, defects, and dispute resolution.
• AS 2124-1992: An older standard form, still in use but increasingly superseded by AS 4000. More principal-friendly in some respects.
• AS 4902-2000: Design and construct variant of AS 4000 — allocates design responsibility to the contractor.
• ABIC MW-2018 (Major Works): Used in some institutional projects, particularly where the architect administers the contract.

In practice, standard forms are heavily amended — “special conditions” appended to AS 4000 can fundamentally shift risk allocation. Boss Lawyers reviews and advises on both standard form and bespoke construction contracts.

Dispute Resolution Clauses — Know Your Path

Standard form construction contracts include multi-step dispute resolution clauses that must generally be followed before commencing litigation or arbitration. AS 4000 clause 42 provides a typical example:

1. Notice of dispute: Either party may give a notice of dispute to the superintendent and other party
2. Senior executive negotiation: Senior representatives of each party must meet and endeavour to resolve the dispute within a specified period
3. Expert determination or arbitration: If negotiation fails, the dispute goes to expert determination or arbitration (depending on the contract)

Failure to follow the contractual dispute resolution process can have serious consequences — including costs orders and, in some cases, the loss of rights. Boss Lawyers ensures that dispute resolution obligations are properly followed while pursuing your claim with maximum effectiveness.

Expert Determination vs Litigation vs Adjudication

Construction disputes can be resolved through several mechanisms, each with different characteristics:

In practice, many construction disputes resolve through negotiation or mediation before reaching adjudication, arbitration, or court. A well-positioned claim with strong evidence often produces a commercial settlement quickly.

How Boss Lawyers Can Help

Boss Lawyers acts for contractors, subcontractors, principals, and developers in construction contract disputes across Queensland. Mark Harley, Principal Solicitor, has 17+ years of experience in commercial litigation, including construction and building disputes. We advise on:

• Contract review and risk assessment before signing
• Variation and extension of time claims
• Payment claims and SOPA adjudication
• Defects claims and expert evidence strategies
• Termination rights and consequences
• Expert determination and arbitration proceedings
• Supreme Court building litigation

Frequently Asked Questions

Can I terminate a construction contract if the other party is in breach?

It depends on the nature of the breach and the terms of the contract. Not every breach entitles the innocent party to terminate — generally, you can terminate for a repudiatory breach (which goes to the root of the contract) or for a breach of a condition (essential term). Standard form contracts like AS 4000 contain specific termination provisions that must be followed precisely. Wrongful termination is itself a repudiation, which can expose you to significant liability. Get advice before terminating.

What is a latent condition and who bears the risk?

A latent condition is a physical condition encountered on site that was not reasonably foreseeable — for example, unexpected rock, groundwater, or contaminated soil. Under AS 4000 clause 12, the contractor can claim additional time and cost for latent conditions that differ from those reasonably foreseeable. The allocation of latent condition risk is commonly a heavily negotiated point in construction contracts.

How are liquidated damages calculated and can they be challenged?

Liquidated damages (LD) are pre-agreed damages for delay, expressed as a daily or weekly rate. Courts will enforce LD clauses unless they constitute a penalty — that is, where the LD amount is out of all proportion to the legitimate interest being protected. The penalty doctrine has been clarified in Australia by the High Court in Andrews v Australia and New Zealand Banking Group Ltd (2012) 247 CLR 205. Challenging an LD clause requires evidence that the rate was extravagant compared to the genuine pre-estimate of loss.