Building & Construction Lawyers Parramatta

How building and construction disputes work in New South Wales

Several New South Wales Acts govern building disputes. Which applies depends on who you are and what was built.

If the work was on a home, the Home Building Act 1989 (NSW) sets the ground rules. Residential work worth more than $5,000 must be under a written contract, a builder can ask for no more than 10% of the contract price as a deposit, and for work over $20,000 the builder must give you a certificate of home building compensation cover before asking for any payment. The Act also reads promises about the quality of work and materials into every residential building contract. These are called statutory warranties. You have 6 years from completion to start a claim for a major defect and 2 years for any other defect, with a further 6 months if the problem only becomes apparent in the last 6 months of that period.

If you work in the industry, the Building and Construction Industry Security of Payment Act 1999 (NSW) is the key law. It gives people who carry out construction work a right to progress payments, plus adjudication, a fast interim decision by an independent adjudicator. Since 1 March 2021 it has also covered contracts with owner occupiers, so homeowners can receive payment claims too.

Under the Design and Building Practitioners Act 2020 (NSW), a person who carries out construction work owes a duty of care to the current owner and later owners to avoid economic loss caused by defects, and that duty cannot be contracted away. In August 2026 NSW Parliament passed the Building (Approvals and Practitioners) Bill 2026. Building Commission NSW says the changes take effect once regulations are developed, and industry bodies report the new law will replace this Act but keep the duty of care. Planning disputes sit under the Environmental Planning and Assessment Act 1979 (NSW).

Defective or unfinished building work: where a Western Sydney homeowner starts

For homeowners in Parramatta, Blacktown, Penrith, Liverpool, the Hills, Auburn or Merrylands, a dispute about defective or unfinished work does not begin in a courtroom. You raise the problem with the builder in writing, then lodge a complaint with Building Commission NSW, the state building regulator, whose office is at 4 Parramatta Square, 12 Darcy Street, Parramatta. Complaints are lodged online. An officer contacts the builder to try to reach agreement. If that fails, a complaint about major defects or incomplete work may be referred to a building inspector, who meets both sides on site and can issue a Rectification Order, a written direction listing the work to be fixed and the deadline.

This matters because the NSW Civil and Administrative Tribunal (NCAT) will generally not accept a home building application until the dispute has been referred to the regulator. There are exceptions, including where your time limit will run out within 3 months. NCAT can deal with building claims up to $500,000. NCAT lists Consumer and Commercial Division registries at Level 5, 9 George Street, Parramatta, at the corner of Belmore and Station Streets, Penrith, and at Level 7, 35 Scott Street, Liverpool. Matters are listed first for conciliation, an assisted attempt to reach agreement, and go to a contested hearing only if that fails.

Larger claims go to the District Court of NSW (up to $1,250,000) or the Supreme Court's Technology and Construction List. If your builder has become insolvent, died, disappeared or had their licence suspended for ignoring a court or tribunal order, you instead claim on the home building compensation cover, and the NSW Government says you must notify the insurer in writing as soon as you become aware of defective or incomplete work.

Not been paid for building work? The NSW security of payment timetable

If you are a builder, subcontractor or supplier in Western Sydney waiting on money, the security of payment process runs on strict business-day deadlines. You serve a payment claim. NSW Government guidance says only work completed in the past 12 months can be claimed. The other side then has 10 business days, or less if the contract says so, to give you a payment schedule. That is a written reply stating what they will pay and why they are withholding the rest. If they give no schedule in time, they become liable for the full amount claimed.

Payment falls due no later than 15 business days after the claim for a head contractor paid by a principal and 20 business days for a subcontractor on non-residential work. For residential subcontracts and owner occupier contracts, the contract sets the date, or 10 business days applies if it is silent. If the schedule is for less than you claimed, you have 10 business days from receiving it to apply for adjudication. If a scheduled amount is not paid, you have 20 business days from the due date. If there was no schedule and no payment, you must first give notice within 20 business days of the due date, allow 5 business days for a schedule, then apply within the next 10. Applications go to an authorised nominating authority, a body that appoints adjudicators, and the adjudicator has 10 business days after acceptance to decide.

If you receive a payment claim, including as a homeowner, the same clock runs against you. An adjudication response cannot include reasons for withholding payment that were not in your payment schedule.

Council refused your DA or issued an order: planning appeals in NSW

Planning disputes in NSW are decided by the Land and Environment Court of NSW, not by NCAT. If your council, whether City of Parramatta, Cumberland, Blacktown, Penrith, Liverpool or The Hills, refuses your development application (DA), or approves it with conditions you cannot live with, you can bring what the Court calls a Class 1 appeal. That is a merits review: the Court looks at the proposal afresh. You have 6 months from the date you receive notice of the decision. You can also appeal if the council simply does not decide: an ordinary DA is treated as refused after 40 days, and designated or integrated development after 60 days. A person who objected to designated development, a category of higher-impact projects, has only 28 days to appeal an approval.

The Court's registry is at Level 4, 225 Macquarie Street (Windeyer Chambers), Sydney. Class 1 appeals are usually heard by a commissioner, and some conciliation conferences and hearings are held on site or begin there, so the commissioner may see the block in Merrylands or Kellyville in person. Council orders can also be appealed to the Court, and time limits apply.

How NSW differs from Victoria and Queensland

In Victoria, home building disputes and planning reviews share one state tribunal. In Queensland, the regulator is the QBCC, the tribunal is QCAT, and planning appeals go to the Planning and Environment Court. NSW uses Building Commission NSW and NCAT for home building, with its own $500,000 tribunal limit and its own 6 year and 2 year warranty periods, and sends planning appeals to a dedicated court. Each state also has its own security of payment timetable, so never rely on deadlines learned interstate.

What to do first if you have a building dispute in Parramatta

Whichever side you are on, find the signed contract, plans, variations, invoices and payment records. Put your complaint or claim in writing, date it and keep a copy. Photograph defects. Work out the date the work was completed or last carried out, because NSW time limits are counted from dates like that. If you receive a payment claim, a Rectification Order, a council order or an NCAT notice, diarise the response date that day.

Homeowners can also contact the Home Building Advocacy Service, run through Western Sydney Community Legal Centre, which the NSW Government lists as a free service. Referral to it generally follows the Building Commission NSW dispute resolution process. Vitt Legal's Sydney office is at Level 49, 8 Parramatta Square, Parramatta, in the same precinct as Building Commission NSW, and assists homeowners, builders, subcontractors and developers across Western Sydney and greater Sydney. This page is general information only, not advice about your situation.