If you're planning a new home, an extension or a big renovation, you'll probably hear the words "home warranty insurance". It goes by different names around Australia, and the rules about when it's needed differ between states. What stays the same is the idea: it's a safety net for homeowners if a builder can't finish the job or fix defects.
This guide explains what home warranty insurance generally is, when it's usually required in the bigger states, and how to check you're covered before you hand over any money. Rules change, so always confirm the current requirements with your state regulator before you sign.
What home warranty insurance is
Home warranty insurance is a policy that the builder or contractor takes out for your project, usually in your name, and the cost is built into your contract price. You don't normally buy it yourself. It protects you if something goes seriously wrong with the builder, rather than covering everyday disputes.
In most states it's a last resort scheme. That means you can generally only claim if the builder has died, disappeared or become insolvent, or in some states had their licence suspended or cancelled for particular reasons. If your builder is still trading, they stay responsible for finishing the work and fixing defects, and you'd go through your state's normal complaint or dispute process first.
Queensland and, more recently, Victoria work differently, with schemes that can step in earlier. More on that below.
What it usually covers
Cover depends on the state and the policy, but it typically includes:
- Incomplete work if the builder can't finish the job.
- Defective work, with longer cover for major or structural defects than for minor ones.
- In some schemes, lost deposits or money paid for work that wasn't done.
Cover generally stays with the property for a set number of years, so it can protect a later owner too. That's worth knowing if you're buying a home that was built or renovated recently.
When it's needed in each state
The trigger is usually the value of the residential building work. Here's a general summary from the official sources, but check the full rules and exemptions with your regulator.
New South Wales
In NSW it's called Home Building Compensation (HBC) cover, provided through icare HBCF. According to icare, cover is required for most residential building work valued at more than $20,000, unless an exemption applies, and your builder must give you a Certificate of Insurance before work starts or you pay any money, including a deposit. icare says it's a last resort scheme and doesn't cover delays or disagreements while the builder is still operating.
You can search for a certificate using the free HBC Check on Service NSW, by certificate number, contractor name or licence number, or property address.
Victoria
Victoria changed its system in 2026. Consumer Affairs Victoria explains that from 1 July 2026 the Building and Plumbing Commission covers domestic building work through a "first resort" Home Warranty insurance scheme, for major domestic building contracts worth more than $20,000 on homes of three storeys or less. Contracts signed before that date fall under the older domestic building insurance rules, which applied to work over $16,000.
Under the new scheme you should receive a notice of cover after you sign your contract. If you don't, contact the Building and Plumbing Commission to check.
Queensland
Queensland runs the Queensland Home Warranty Scheme through the QBCC. The QBCC says the premium is compulsory for residential construction work valued at more than $3,300, including materials, labour and GST. That means it can apply to smaller jobs too, such as kitchen and bathroom refits, decks and some roof work. The scheme can cover you if the contractor doesn't finish the work or doesn't fix defects, not just when they've gone broke.
The QBCC suggests checking that the premium is included in each quote so you can compare them fairly.
Western Australia
In WA it's called home indemnity insurance. The WA Government says that for residential building work valued over $20,000, the builder must take out the insurance in the owner's name before accepting any payment or starting work. It generally covers the work during construction and for six years after practical completion.
Other states and territories
South Australia, Tasmania, the ACT and the Northern Territory each have their own rules, names and thresholds, and some work may be exempt. Check your local building regulator or consumer affairs office before you sign a contract.
How to check you're covered
Before you pay a deposit or let work start, run through these steps:
- Ask for the certificate. Your builder should give you a certificate or notice of cover for your specific property.
- Check the details. Make sure your name, the property address and the contract details are correct.
- Verify it with the insurer or register. Use your state's online register or contact the insurer to confirm the policy is real and current.
- Keep a copy. Store the certificate with your contract and plans. You may need it years later.
- Don't pay ahead. Stick to the payment schedule in your contract. Paying early or paying more than the contract says can reduce what you can claim.
What it doesn't replace
Home warranty insurance isn't the same as the builder's public liability insurance, which covers injury or damage to other people's property during the work. It also isn't a substitute for your own home and contents insurance. And owner-builder work is often treated differently, so if you're managing your own build, look up the specific rules in your state.
Finding a builder
When you're comparing builders, ask each one how they'll handle home warranty insurance for your job and make sure it's shown in the quote. You can use Find My Tradie to find and contact builders directly, including builders in Sydney and builders in Brisbane. Get two or three written quotes so you can compare price, timing and what's included.
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Frequently asked questions
Do I pay for home warranty insurance myself?
Usually not directly. The builder or contractor takes out the policy, generally in your name, and the cost is included in your contract price.
Can I claim if my builder is just slow or we disagree about the work?
In most states, no. Schemes like NSW's are a last resort for when the builder has died, disappeared or become insolvent. For disputes with an operating builder, contact your state's fair trading or building regulator. Queensland's and Victoria's newer schemes can work differently, so check their guidance.
Does it apply to small jobs like a bathroom renovation?
It depends on the state and the value of the work. In Queensland the threshold is much lower than in NSW, Victoria or WA, so a bathroom or kitchen refit can be covered there. Check your regulator's rules for your job.
I'm buying a house that was recently renovated. Does the cover pass to me?
Cover often stays with the property for a set period, so it may protect later owners. Ask the seller for the certificate and check it with the insurer or your state's register.
This guide is general information only, not legal or financial advice. Rules change, so check the official sources linked above for your state.