Commercial Litigation & Dispute Resolution
Building and construction disputes
Building disputes turn on documents and dates: the contract, the invoices, the notices and the photographs. Sun Lawyers acts for home owners, builders and subcontractors in NSW in disputes about defective work, unpaid work and the contract itself. We work in English, Mandarin and Cantonese.
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If you are the owner:
- The work is defective, late or unfinished and the builder is not fixing it.
- You have received a payment claim and are not sure whether to pay it.
- The builder has walked off the job or wants to terminate.
If you are the builder or a subcontractor:
- A progress claim has not been paid.
- The owner or head contractor is alleging defects and withholding money.
- You need the contract reviewed before you sign it.
What we do
- Review the contract and the evidence of the defects or the unpaid amount, and explain where you stand.
- Serve payment claims and payment schedules under the security of payment legislation, and run or defend adjudications.
- Send notices under the contract, including notices to remedy breach and notices of suspension or termination.
- Start or defend proceedings in NCAT or the courts, and work with building consultants on the technical reports the case needs.
- Negotiate rectification or settlement, and record it in writing.
Points worth knowing
- Statutory warranties. Every contract to do residential building work in NSW carries implied warranties: the work will be done with due care and skill and in accordance with the plans, the materials will be good and suitable and new unless the contract says otherwise, the work will comply with the law, it will be done within the agreed or a reasonable time, and the result will be reasonably fit to live in. These warranties also run between a head contractor and its subcontractors.
- Two warranty periods. Proceedings for breach of a statutory warranty must be started within 6 years after completion for a major defect, and within 2 years in any other case; a breach that appears in the last 6 months of the period gets a further 6 months. A major defect is a defect in a major element, such as a load-bearing component, a fire safety system or waterproofing, that makes the building unusable, destroys it or threatens its collapse, or is likely to.
- Licence and insurance. Residential building work worth more than $5,000 must be done under a contractor licence. Work with a contract price above $20,000 must be covered by home building compensation insurance, and the builder cannot demand a deposit or any other payment until the certificate of insurance has been given. A contract above $20,000 must be in writing and signed, and the owner may rescind it within 5 clear business days of receiving a signed copy.
- An unlicensed contractor cannot enforce the contract. A person who contracts to do residential building work without the required licence, or without the written contract the Act requires, cannot recover damages or enforce the contract, although they remain liable for their own breaches.
- Security of payment. A contractor or subcontractor may serve a payment claim on and from the last day of each month, and the claim must identify the work, state the amount and state that it is made under the Act. The recipient has 10 business days, or less if the contract says so, to serve a payment schedule saying how much it will pay and why; if it serves none, it becomes liable for the full claimed amount on the due date. Unpaid claims can go to a fast adjudication, and an adjudication certificate can be filed as a court judgment. These rights cannot be contracted out of. They are not available to a builder who is unlicensed or uninsured when the law requires it.
- Where the dispute is heard. NCAT can hear a building claim of up to $500,000. The Act directs courts and the Tribunal to have regard to the principle that rectification of the defective work by the responsible party is the preferred outcome.
How we work
- 01
A first conversation in English, Mandarin or Cantonese about the contract, the stage the work has reached and what has been paid.
- 02
Before any work starts, we confirm the scope of work and our fees in writing.
- 03
We set out the options, including the dates that must not be missed, and act on the one you choose.
Common questions
I have received a payment claim I disagree with. What do I do?
Serve a payment schedule within 10 business days, or sooner if the contract says so, stating what you will pay and why you are withholding the rest. If you do nothing, you become liable for the whole amount claimed. If you served no schedule, the claimant must give you notice before applying for adjudication and you then have 5 business days to serve one; reasons that are not in a schedule cannot be raised in the adjudication.
The builder finished two years ago and cracks have appeared. Is it too late?
It depends on the defect. A major defect, such as a structural or waterproofing failure that makes the building unusable or threatens collapse, can be pursued for 6 years after completion; other defects for 2 years, with a further 6 months for breaches that appear late in the period. Get the defect inspected and documented straight away.
Our builder is not licensed. Do we still have to pay?
An unlicensed contractor cannot enforce the contract or recover damages under it, and cannot use the security of payment process. You may still face a claim for the value of work actually done, so take advice before deciding what to pay.
Related reading
What To Do When You're Owed Money in Australia
Only Ten Minutes to Read a Contract? Read These Five Clauses
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Shareholders' agreements and investing in a company
Commercial and retail leases in NSW
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Debt recovery and statutory demands
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Franchising
Mediation and dispute resolution
Court representation
This page is general information about the law applying in New South Wales and is not legal advice. Please contact us about your own situation.
Last updated: October 2026

