What home warranty insurance covers in Australia: state-by-state rules, limits and claim triggers

Home warranty insurance requirements vary substantially across Australia. Cover becomes compulsory above $3,300 of building work in Queensland and at or above $25,000 in the Northern Territory. Between those two figures sit five more schemes, each with its own name, threshold, cover limit and claim trigger. There is no national home warranty insurance scheme in Australia, and no single answer to what the cover includes.

Seven of Australia's eight states and territories operated a scheme when the article was reviewed. Victoria's replacement scheme, Home Warranty, commenced on 1 July 2026. Tasmania passed enabling legislation in 2023, but the provisions commence by proclamation, and no proclamation was verified at the time of writing.

Two design differences matter more than the naming. The first is whether a scheme is last resort or first resort. A last-resort scheme responds only after a terminal builder event, such as insolvency, death or disappearance. A first-resort scheme can respond to incomplete or defective work while the builder is still trading.

The second is that the protection sits behind the builder, not in place of the builder. In every jurisdiction reviewed, the contractor's own contractual and statutory obligations remain primary.

Seven schemes operating, with thresholds from $3,300 to $25,000. Four schemes are last resort, while New South Wales is predominantly last resort. Queensland is first resort, and Victoria's scheme responds where a builder is unable or unwilling to act. Tasmania legislated for a replacement scheme in 2023, but it had not commenced when the article was reviewed.

Victoria's limits are set directly by the Building (Statutory Insurance Scheme) Regulations 2026 rather than only described in guidance.

Regulation 21 caps total assistance at $400,000 for all losses relating to a home. Within that, regulation 17 limits assistance for completing incomplete work to 30% of the contract price, regulation 23 caps accommodation, removal and storage costs at $12,000, and regulation 22 caps site security at $5,000.

Western Australia publishes three separate consumer figures: a $200,000 aggregate limit, deposit protection up to $40,000, and an excess the insurer is permitted to charge of $500.

South Australia describes its cover differently again. The scheme administrator states that building indemnity insurance contributes to the costs of completing a project above the original contract price, and that the owner still pays the remainder of the contract price to the replacement builder.

The composition of those approved claims shifted over five years. Approved non-completion claims rose from $9.9 million in 2020–21 to $62.9 million in 2023–24, then fell to $31.4 million in 2024–25, a decrease of 50.1% in one year, calculated from the published annual figures.

Approved defective-work claims followed a different path, rising steadily across the whole period from $16.6 million to $23.5 million, an increase of 41.6% in nominal terms. The scheme data records the amounts approved; it does not identify why the pattern changed.

Premiums and policy numbers moved differently again. Policies issued fell 2.6% between 2020–21 and 2024–25, from 168,468 to 164,050, while premiums rose 40.7%. Both figures are calculated from the published annual totals.

Dividing premiums by policies gives an average premium per policy of $1,209 in 2024–25, up from $836 in 2020–21. That average spans everything from a renovation just over $3,300 to a large new build, so it describes the scheme's overall revenue per policy rather than a price any individual would be quoted.

Subsidence was the smallest approved-claim category over the period, ranging from $3.8 million to $5.8 million.

Definitions:

• Policies issued counts policies written in the financial year, not policies in force.
• Claims received counts claims lodged in the year. Claims approved is the dollar value approved in the year, not necessarily cash paid in that year. The two do not refer to the same set of claims.
• Recovered paid-out costs are amounts recovered from responsible contractors and may relate to amounts paid in earlier years.
• Monetary figures are nominal.

Claims received per 1,000 policies issued fell from 18.3 in 2022–23 to 12.0 in 2024–25, calculated by dividing claims received by policies issued in each year.

Claims lodged in a year relate to work insured across several earlier years, so that ratio is indicative of scheme workload rather than a defect rate for any cohort of homes.

Statutory warranties are not optional guarantees offered by the builder. In South Australia, section 32 of the Building Work Contractors Act 1995 implies six warranties into every domestic building work contract.

These warranties cover proper workmanship to accepted trade standards, good and proper materials, compliance with statutory requirements, reasonable diligence, fitness for human habitation, and fitness for a purpose made known by the owner.

Section 42 of the same Act provides that any purported exclusion, limitation, modification or waiver of a right or warranty implied by the Act is void. A builder cannot contract out of these obligations.

Home warranty insurance sits behind those warranties rather than replacing them. Section 35 describes a complying policy as one that insures a person entitled to the benefit of a statutory warranty against the risk of being unable to enforce or recover under that warranty because of the contractor's insolvency, death or disappearance.

New South Wales adds a trigger the other last-resort schemes do not share: suspension of the contractor's licence for failing to comply with a tribunal or court order to pay compensation to the homeowner.

Queensland's scheme extends beyond contractor conduct. Eligible events can include fire, storm, vandalism or theft affecting incomplete work. Defective-work claims can also include subsidence, which the Queensland Building and Construction Commission reports as a separate category of approved claim.

Victoria's scheme responds where the builder is unable or unwilling to complete or rectify. Most defect claims begin with a written complaint notice to the builder. That step is not required where a serious contract event has occurred, which includes death, disappearance, insolvency, cancellation of registration or valid termination for default.

Statutory warranty periods and insurance cover periods differ in most jurisdictions, and either period can be longer than the other.

In the ACT, the insurance period of 5 years is shorter than the 6-year structural warranty. A statutory warranty can therefore remain in force after the insurance period has ended.

In South Australia, the limitation is on the warranty itself. Section 32(5) of the Building Work Contractors Act 1995 requires proceedings for breach of a statutory warranty to be commenced within 5 years after completion of the work, and section 32(6) provides that this period may not be extended.

In Tasmania, section 32(1) of the Residential Building Work Contracts and Dispute Resolution Act 2016 gives owners 6 years from practical completion to commence proceedings for breach of a statutory warranty.

Part 6 implies warranties covering materials, workmanship, legal compliance, plans, fitness for occupation and diligence. Tasmania did not have an operating home warranty insurance scheme when the article was reviewed, so no insurance scheme stood behind these statutory warranties.

In Queensland, structural cover generally runs 6 years 6 months from the cover commencement day, with an additional 6 months in some delayed-completion cases, while non-structural cover runs 6 months after the work is substantially complete, with claims required within 7 months.