Introduction
In building and construction litigation, outcomes are often determined long before proceedings commence. Contract drafting plays a decisive role. Courts and tribunals routinely resolve disputes by reference to contractual risk allocation rather than broader notions of fairness.

Many parties approach construction contracts as commercial documents rather than legal instruments. This approach creates risk. Clauses dealing with variations, time, payment, termination and dispute resolution frequently decide the success or failure of claims. This article examines the contractual provisions that most commonly shape construction litigation.
1. Scope of Works and Design Responsibility
1.1 Defining scope with precision
Disputes often arise from poorly defined scope. Ambiguity creates disagreement about what was included in the contract price. Courts assess scope by reference to drawings, specifications, schedules and incorporated documents.
Where scope is unclear, parties face evidentiary challenges. Claims for additional payment may fail if the work falls within the original contractual obligations.
1.2 Design responsibility and fitness for purpose
Contracts may allocate design responsibility to builders, consultants or principals. Where builders assume design obligations, liability for defects may extend beyond workmanship to performance outcomes. Fitness for purpose obligations increase exposure and complicate defect claims.
2. Variation Clauses and Change Management
2.1 Formal variation procedures
Most contracts require variations to be documented and approved before work proceeds. Disputes arise when work is undertaken informally or under time pressure.
Courts apply variation clauses strictly. Contractors who fail to follow prescribed procedures may lose entitlement to payment, even where additional work was clearly performed.
2.2 Oral directions and implied variations
Informal instructions are common on construction sites. However, reliance on oral directions creates risk. Some contracts permit implied variations. Others exclude them entirely. Litigation frequently turns on whether conduct constituted a valid instruction under the contract.
3. Time, Delay and Extension of Time Clauses
3.1 Notice requirements for delay claims
Extension of time clauses usually impose strict notice requirements. Failure to issue notices within prescribed timeframes may bar claims. Courts enforce these provisions even where delay was beyond the contractor’s control.
3.2 Liquidated damages and prevention principles
Contracts often provide for liquidated damages for late completion. Disputes arise where principals cause delay but deny extensions of time. In some cases, the prevention principle may apply, limiting the principal’s ability to claim damages. Outcomes depend heavily on drafting.
4. Payment Clauses and Security of Payment Interaction
4.1 Payment regimes and certification
Payment clauses govern valuation, certification and timing. Disputes frequently involve non certification, set off claims or withheld payments. Courts distinguish between contractual payment rights and statutory entitlements under security of payment legislation.
4.2 Risk of conditional payment provisions
Pay when paid and similar clauses may be unenforceable under statute. Incorrect reliance on such clauses exposes principals to adverse findings and penalty risk.
5. Termination and Suspension Clauses
5.1 Termination for default
Termination clauses must be exercised strictly in accordance with contract terms. Common errors include:
- insufficient notice
- incorrect grounds
- failure to allow cure periods
Wrongful termination exposes parties to substantial damages.
5.2 Suspension rights and consequences
Suspension provisions allow work to be paused in defined circumstances. Disputes arise when suspension is used as a leverage tool rather than for legitimate contractual reasons.
6. Dispute Resolution and Forum Selection Clauses
6.1 Mandatory dispute resolution steps
Many contracts require negotiation, mediation or expert determination before litigation. Failure to comply may delay proceedings or result in adverse cost consequences.
6.2 Arbitration and jurisdiction clauses
Forum selection affects procedure, cost and appeal rights. Courts generally enforce arbitration clauses. Parties who overlook these provisions may find themselves in an unintended forum.
7. Unfair Contract Terms and Statutory Constraints
7.1 Increased scrutiny of standard form contracts
Construction contracts may be subject to unfair contract term laws, particularly in smaller projects. Broad discretionary powers, unilateral variations and one sided termination rights may be unenforceable.
7.2 Interaction with statutory regimes
Contract terms cannot override statutory obligations. Security of payment legislation, building legislation and consumer protections may affect enforcement.
Conclusion
Construction disputes are often resolved through contract interpretation. Clauses dealing with scope, variations, time, payment and termination frequently determine outcomes before litigation begins. Parties who understand these provisions and comply with procedural requirements significantly improve their position.
Early legal advice during contract negotiation and dispute emergence reduces risk and limits costly litigation.
Speak With a Building and Construction Litigation Expert
If you are negotiating a construction contract or facing a dispute arising from contractual interpretation, book a call with one of our expert building and construction lawyers at Vobis Lawyers. Early advice can help identify risk and protect your position.





