If you’re a residential builder and you’ve been told you need HBC, DBI, or builders warranty insurance, the first thing to understand is that this isn’t one national product. Each state and territory runs its own scheme, with different rules about when cover is triggered, who administers it, and what it protects.
This article steps through the fundamentals so you can see what applies in your state, why it matters for your business, and where to go for help that fits your circumstances.
Why this cover exists and what it does
Home building compensation — often still called builders warranty insurance — is mandatory in most Australian jurisdictions when you enter into a contract for residential building work above a certain value. Its core job is to protect the homeowner if you, as the builder, cannot complete the work or fix defects because you have died, become insolvent, or disappeared. It is not a maintenance warranty, and it doesn’t replace your own public liability or contract works cover.
As a builder, you typically arrange the policy and pay the premium, but the cover is for the benefit of the owner (and in some cases, subsequent owners). That’s a key distinction: you’re buying protection for your client.
When you’re likely to need it
The trigger is usually the contract price. Thresholds and exact triggers vary:
- New South Wales – Required for any residential building contract over $20,000. The scheme is called the Home Building Compensation Fund (HBC), administered by the State Insurance Regulatory Authority (SIRA) under NSW Fair Trading. Cover must be in place before you take a deposit or start work.
- Queensland – The Queensland Home Warranty Scheme applies to contracts over $3,300 for defined residential work. It’s run by the Queensland Building and Construction Commission (QBCC), and eligible work is covered automatically when you’re a licensed contractor.
- Victoria – Domestic Building Insurance (DBI) is required for contracts over $16,000. The Victorian Managed Insurance Authority (VMIA) administers the scheme, and you must provide a certificate of insurance to the owner before accepting a deposit or starting work.
- South Australia – Building indemnity insurance is required for residential work over $12,000, unless an exemption applies. It’s handled by private insurers approved by Consumer and Business Services (CBS).
- Western Australia – Home indemnity insurance is governed by the Building Services (Complaint Resolution and Administration) Act, but currently WA does not operate a mandatory scheme, and the requirement is treated as satisfied by ministerial order. Check the latest situation with the Building and Energy division before contracting.
- Tasmania – Residential building contracts over $20,000 need residential building work cover, administered by the Tasmanian Government through the Director of Building Control.
- Australian Capital Territory – Residential building insurance is required for work over $5,000, under the ACT’s building regulatory framework.
- Northern Territory – The NT doesn’t have a mandatory residential building warranty insurance scheme. Builders should confirm any future changes directly with NT Consumer Affairs.
These figures are a snapshot; thresholds do change, so it’s always sensible to check the relevant state authority’s website before you quote.
How to get it
You don’t buy this cover off a standard business insurance broker’s shelf. In most states, you must lodge the policy through the designated scheme manager, private insurer panel, or your licensing body. Because the structure is state‑specific, your relationship with an authorised representative starts with knowing which scheme applies to your project.
That’s where general guidance helps. BuilderCover doesn’t issue policies, underwrite, or set premiums — but we can walk you through the questions that matter in your state, and connect you with an authorised adviser who can take your application further.
What it doesn’t cover
No scheme covers your own tools or plant, the works in progress, your legal liability for third‑party injury or property damage, or your income if a project is delayed. Those are separate business insurance products, and they’re just as important to get right.
A practical checking list
Start with three straightforward steps:
- Know your contract price — because that number determines whether your job crosses the mandatory threshold.
- Know your state’s trigger — some schemes link cover to the day you take a deposit or start physical work.
- Get a certificate of insurance to the owner before you begin — across almost all schemes, that’s a non‑negotiable legal requirement.
Where BuilderCover fits in
We provide general business insurance information for builders — no more, no less. We’re not an insurer, underwriter, or broker, and we don’t promise you a particular premium, level of cover, or a result on a claim. What we can do is help you sort out what’s mandatory, what’s recommended, and whether an authorised adviser could add value for your specific business situation. If you’d like to get that conversation started, an enquiry with BuilderCover is the way in.