The High Cost of Poor Contract Administration: Lessons from Osborn v Buildrite

Published by Odyssey Legal | Business & Litigation Lawyers

The recent Queensland Civil and Administrative Tribunal decision in Osborn v Buildrite (Qld) Pty Ltd [2025] QCAT 554 serves as a stark reminder that proper contract administration isn't just paperwork. It's protection. The case demonstrates how failing to document variations and follow contractual processes can cost builders significantly.

Within this article, we will explain why it is crucial for builders to ensure proper contract administration. Alternatively, you can watch our Youtube Video explaining this (click here).

What Happened?

Buildrite (Qld) Pty Ltd contracted to build a home for Mr and Mrs Osborn. The approved plans specified raked ceilings in certain areas. However, Buildrite constructed flat ceilings instead.

When the homeowners discovered the discrepancy, Buildrite argued that the Osborns had agreed to change from raked to flat ceilings. The problem? There was no approved variation and no contemporaneous written evidence of any such agreement.

The Tribunal wasn't convinced. Without proper documentation following the contract's variation process, Buildrite was ordered to pay damages for the cost of removing the existing flat ceiling and replacing it with a raked ceiling as specified in the approved plans.

The "Not Applicable" Trap

The case also addressed another common misconception among builders: that noting "Not Applicable" or "Nil" next to liquidated damages in a contract schedule means you won't be liable for delays.

The Osborns sought delay damages for additional rent they incurred when Buildrite failed to complete the work by the contracted date. Buildrite argued that by marking "Not Applicable" next to the liquidated damages amount in the contract schedule, the parties intended there would be no consequences for late completion.

The Tribunal rejected this argument decisively. Following the decisions in J Corp Pty Ltd v Mladenis [2009] WASCA 157 and Carbone v Fowler Homes Pty Ltd [2024] NSWCA 192, the Tribunal confirmed that simply noting "Not Applicable" doesn't exclude a homeowner's entitlement to unliquidated damages (general damages for the actual losses suffered due to delay).

The distinction is crucial. Liquidated damages are pre-agreed amounts specified in the contract. Unliquidated damages are the actual losses proven by the affected party. Just because you haven't agreed to liquidated damages doesn't mean there are no damages at all.

Extensions of Time: Use Them or Lose Them

The third major issue in the case involved Buildrite's claim that delays were caused by the Osborns. The builder argued they shouldn't be liable for delay damages because the homeowners contributed to or caused the delays.

The Tribunal noted that the contract contained a mechanism allowing the builder to seek extensions of time for owner-caused delays. Buildrite had failed to use this process.

The message was simple: if your contract provides a process for claiming extensions of time, you must follow it. You can't ignore the contractual mechanism and then complain about delays after the fact.

Why This Matters for Queensland Builders

This decision reinforces several fundamental principles that every Queensland builder should understand:

Document all variations immediately. Verbal agreements aren't enough. If you and the homeowner agree to change something from the plans, document it in writing using your contract's variation process. Get signatures. Keep records. If it's not documented, it didn't happen.

Understand your contract's damages clauses. Marking something as "Not Applicable" in your contract schedule doesn't automatically protect you. If you want to exclude delay damages entirely, you need clear, unambiguous language that makes that intention obvious. Better yet, get legal advice before signing.

Use your contract's EOT processes. Contracts include extension of time procedures for a reason. If the homeowner causes delays, document it and submit an EOT claim according to your contract. Failing to do so means you can't later argue the delays weren't your fault.

Contemporaneous records are critical. The Tribunal specifically noted the absence of contemporaneous documents evidencing the alleged agreement to change the ceiling. Keep records as events happen, not after disputes arise. Text messages, emails, site meeting notes, and variation forms are your best evidence.

The Broader Implications

While this case involved a domestic building contract, the principles apply equally to commercial projects. In fact, commercial contracts often have even more detailed requirements for documenting variations and claiming extensions of time.

For business owners engaging builders, this case demonstrates the importance of holding contractors to the plans and specifications. It also shows that attempting to contract out of liability through ambiguous notations likely won't work.

For builders, the case is a reminder that cutting corners on administration doesn't save time. It creates risk. The cost of properly documenting a variation is minimal compared to the cost of removing and replacing work done without approval.

Practical Steps for Builders

To avoid the pitfalls demonstrated in Osborn v Buildrite, Queensland builders should:

• Implement a formal variation process and train staff to use it consistently
• Never proceed with changes from the approved plans without written approval, regardless of what the homeowner says verbally
• Understand the difference between liquidated and unliquidated damages and seek legal advice on contract terms before signing
• Use extension of time processes promptly when delays occur due to owner actions or circumstances beyond your control
• Maintain detailed contemporaneous records of all site communications, agreements, and events
• Review your standard contract terms with a construction lawyer to ensure damages clauses reflect your intentions

The Bottom Line

Osborn v Buildrite isn't a case about complex legal principles. It's about basic contract administration. The builder's problems arose from failing to document variations, misunderstanding contract terms, and not using available contractual processes.

These are preventable mistakes. With proper systems and procedures, builders can protect themselves from similar disputes. The alternative, as Buildrite discovered, is paying for rectification work and damages that proper documentation could have avoided.

Contract administration isn't just paperwork. It's risk management. And in the construction industry, managing risk is just as important as managing projects.

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Odyssey Legal is an expert building & construction law firm, servicing all of Queensland. We focus on helping Queensland builders, contractors and trades, resolve disputes, recover debts, and protect their interests through strategic legal advice.

Frequently Asked Questions

Q: Can I rely on verbal agreements with homeowners to change the building plans?

A: No. The Osborn v Buildrite case makes clear that verbal agreements aren't sufficient. You need written approval through your contract's variation process. Without it, you risk having to redo work at your own expense.

Q: If my contract marks liquidated damages as "Not Applicable", am I protected from delay damages?

A: Not necessarily. As this case confirms, marking liquidated damages as "Not Applicable" doesn't prevent the homeowner from claiming unliquidated damages (their actual losses). If you want to exclude delay liability entirely, you need clear contractual language stating that.

Q: What should I do if the homeowner causes delays on my project?

A: Use your contract's extension of time process immediately. Document the delay, explain how it was caused by the owner, and submit a formal EOT claim. If you don't follow the contractual process, you may not be able to rely on those delays as a defence later.

Q: How detailed do my records need to be?

A: Very detailed. Keep contemporaneous records of all conversations, agreements, site conditions, and events. Text messages, emails, photos, meeting notes, and daily diaries are all valuable. Records created after a dispute arises carry much less weight than documents created when events occurred.

Q: What's the difference between a variation and a provisional sum adjustment?

A: A variation is a change to the scope of work from what was originally contracted. A provisional sum adjustment relates to costs that were estimated in the contract but are adjusted based on actual costs. Both typically require documentation, but the processes may differ. Check your specific contract terms.

Q: Can I start work on a variation while waiting for written approval?

A: Technically, you can, but it's extremely risky. If the homeowner later disputes the variation or refuses to sign, you may not be paid for that work. It's always better to wait for written approval before proceeding.

Q: What if my contract doesn't have an extension of time clause?

A: Most standard building contracts do include EOT provisions. If yours doesn't, you should speak with a construction lawyer about your options. The absence of an EOT clause doesn't mean you're automatically liable for all delays, but it does complicate matters and require legal analysis of your specific situation.

Q: Does this case apply to commercial building projects too?

A: Yes. While Osborn v Buildrite involved a domestic building contract, the principles about documenting variations, understanding damages clauses, and using contractual processes apply equally to commercial construction. In fact, commercial contracts often have even stricter requirements.