What to do when a builder's work goes wrong in NSW
Defective building work is stressful and confusing, but NSW has a clear, accessible process for resolving it — from NSW Fair Trading through to the NSW Civil and Administrative Tribunal (NCAT). Here's how it works, in plain terms.
Most people who end up in a building dispute never planned to be there. You pay a contractor, the work falls short, and suddenly you're trying to understand a system you hoped you'd never need. The good news: in NSW the process is designed to be accessible without a lawyer. This guide walks through how it works and what to expect. It is general information, not legal advice — for your own situation, get advice from a solicitor or a free service like LawAccess NSW.
Start here: try to resolve it directly
Before any formal process, you're expected to have genuinely tried to resolve the problem with the builder directly. Put your concerns in writing, be specific about the defects, and keep every message calm and factual. This matters more than people realise: everything you write can later become evidence, and a clear, measured paper trail is worth a great deal if the matter escalates.
Photos, dates, quotes, contracts, and every message. You don't know on day one whether a job will go bad — but if it does, the person with the organised records is in a far stronger position than the one reconstructing events from memory months later.
Step 1 — NSW Fair Trading
Before lodging a tribunal application, you're generally expected to have lodged a complaint with NSW Fair Trading. Fair Trading can inspect the work and, in some cases, issue a rectification order directing the builder to fix defined defects. Even where that doesn't resolve things, it creates an official record the tribunal will want to see. Think of it as a required first step, not an optional one.
What NCAT actually is
NCAT — the NSW Civil and Administrative Tribunal — is not a court. It's a tribunal set up to resolve civil disputes cheaply and, where possible, without lawyers. Home building disputes go to its Consumer and Commercial Division, which can hear claims up to $500,000.
Legal representation is not automatic: you generally need the tribunal's leave (permission) to be represented, and for many consumer matters that permission isn't granted. In practice, both sides often turn up and run their own case. The filing fee is modest relative to most claims, and costs are usually not awarded against the losing party unless there are special circumstances — though that position can change as the amount in dispute grows. Always check the current fees and costs rules on the NCAT website before you lodge, because both move.
The trade-off for a low-cost, lawyer-optional tribunal is that the responsibility sits with you. A self-represented applicant with well-organised evidence can absolutely hold their own — but the preparation is on you.
The steps, in order
- Lodge the application. Done online through the NCAT portal. You name the respondent, describe the dispute, and state what orders you want. Getting the respondent's correct legal identity right matters more than people expect — trading names, sole-trader ABNs and Pty Ltd companies are not interchangeable, and naming the wrong entity is expensive to fix later.
- Mind the time limits. Statutory warranties under the Home Building Act run for six years on major defects and two years on other defects, from completion. Don't sit on a problem.
- The first listing. Usually a conciliation and directions hearing. A tribunal officer tries to settle the matter on the day; if it doesn't settle, you get "directions" — a timetable telling both sides when to file evidence. These are not suggestions; missing them has consequences.
- Evidence. This is where the case is won or lost, and it's almost entirely a documents exercise. Expert reports need to comply with the tribunal's expert code of conduct. If you've used any AI tools in preparing material, check the tribunal's current disclosure requirements — they exist and are enforced.
- The hearing. Substantive matters get listed for a block of time, where both sides present their case to a tribunal Member who makes a binding decision.
The evidence bundle is the whole game
If there's one thing worth internalising, it's that the Member reads your bundle before they meet you. A well-organised bundle does more work than anything you say on the day.
Strong bundles tend to share a few features: a single, indexed, page-numbered document; a short key-points summary at the front so the Member grasps the shape of the case within a minute or two; and a Scott Schedule — a table listing every defect, your position on it, the builder's position, and the cost to rectify. Members like Scott Schedules because they can work through a claim item by item.
Lead with the summary and the schedule. Keep correspondence calm and factual throughout the dispute, because contradictions in the other side's own words — laid out plainly, in date order — often do the persuading without you having to argue at all.
Work order vs money: the trap
Here's the part that catches many applicants off guard. Under the Home Building Act, the tribunal is directed to prefer ordering the builder to return and fix the work over ordering them to pay you money. That's the default position.
A work order is a real outcome — it means the person who did the defective work comes back to do it again. If you'd prefer money instead, you generally have to give the Member a reason to be uncomfortable sending them back: a broken-down relationship, regulatory breaches, contradictions in the builder's evidence, or work that can't be verified as compliant once it's closed up. It's less about proving they're incapable and more about creating enough doubt that ordering them back looks like the riskier option.
Winning an order is a piece of paper. Whether it turns into money or fixed work depends on whether the other side is solvent and collectable — worth investigating early, not the week after you win.
Frequently asked questions
Do I need a lawyer for NCAT?
Usually not, and often you can't have one without the tribunal's permission. NCAT is designed for self-represented parties in most consumer building matters. That said, getting a one-off solicitor's view on strategy — particularly on the work-order-versus-money question — before a hearing is sensible.
How long do I have to bring a claim?
Statutory warranties under the Home Building Act run for six years for major defects and two years for other defects, measured from completion of the work. Don't delay, and confirm the current position for your circumstances.
What is a Scott Schedule?
A table that lists each alleged defect, your position on it, the builder's position, and the cost to rectify. It lets the tribunal Member work through a claim item by item, and it's one of the most useful documents you can prepare.
Will the tribunal make the builder pay me?
Not necessarily. The default position under the Home Building Act is to prefer ordering the builder to return and rectify the work rather than pay money. If you want money instead, you generally need to give the Member a reason to be uncomfortable sending the builder back.
Is this legal advice?
No. This is general information about how the NSW process works. For advice on your own situation, contact a solicitor or a free service such as LawAccess NSW.
Sources & further reading
- Remodeling Magazine's Cost vs. Value Report (Zonda/JLC) and Angi's 2026 bathroom cost guide — the benchmarks behind the tier ranges above.
- Remodeling Magazine's Cost vs. Value Report — resale-recovery percentages for mid-range and upscale bathroom remodels.
- Waterproofing and ventilation requirements vary by local building code — confirm current requirements with your local building department.
Estimates for planning only, not a professional assessment of your project — our editorial standards explain how we research. Confirm your real cost with local quotes.