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How to Check Your Builder's Licence in Australia (State-by-State Guide)

Angus
A new timber house extension under construction. Verifying a builder’s licence is a critical due diligence step of an Australian home build to ensure the work meets National Construction Code standards.

If you've searched for how to check builder licence Australia, this guide is the answer. Verifying your builder's credentials is the single most important step you can take before signing a building contract - and it takes less than five minutes once you know where to look. This guide tells you exactly which register to use in your state, what a current licence covers, and four things most homeowners never check that matter just as much as the licence status itself.

Why the Licence Check Matters More Than You Think

A builder's licence has direct legal and financial consequences for you - not just for the builder.

The consequences of unlicensed building work fall on both builder and homeowner - and they vary across jurisdictions. In NSW, carrying out or contracting for residential building work without the required licence can attract penalties of up to 1,000 penalty units (approximately $110,000) for a corporation under the Home Building Act 1989. Licensing and insurance non-compliance can also affect contract enforceability and the remedies available to you - but the exact legal consequences depend on the specific breach and should not be reduced to a single rule. In Queensland, unlicensed contracting carries criminal penalties of up to 250 penalty units (approximately $41,725 at the current rate of $166.90 per unit) for a first offence, rising to 350 penalty units (approximately $58,415) or one year's imprisonment for repeat or serious contraventions. All other states and territories regulate unlicensed building work with significant penalties, though the precise consequences - including any effects on contract validity, insurance, and available remedies, differ by jurisdiction.

A valid licence is also the prerequisite for home warranty insurance in most states - but insurance is a separate topic covered in its own guide.

If you want to understand the warning signs of financial trouble before you get to that point, read our guide: Builder Insolvency Warning Signs: How to Spot Financial Trouble Before It's Too Late.

State-by-State: Where to Check Your Builder's Licence

The short answer to how to check builder licence Australia-wide: there is no single national register. Licensing is managed at the state and territory level, and you need to search the register specific to where your project is located. Use the table below to find the right check for your state.

A quick note on terminology: Victoria uses the word "registration" rather than "licence." For practical purposes, it means the same thing - a builder must be registered with the VBA before they can legally enter a domestic building contract. When searching in Victoria, look for "practitioner registration."

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What Every Reader Needs to Check - Regardless of State

Australia has eight separate licensing regimes with different regulators, different terminology, and no single national register. That fragmentation is by design — building is a state responsibility under the Constitution — and it's the core reason a licence check is harder than it should be.

But underneath the different names and portals, five questions are universal. Whatever state or territory you're building in, you need to be able to answer yes to all five before signing anything:

  1. Is the licence/registration current? A suspended, expired, or cancelled licence means no legal authority to contract. In most states it also affects eligibility for home warranty insurance, but the exact trigger and consequences vary by jurisdiction.
  2. Does the licence class cover my project? A builder can be fully licensed, just not for what you're asking them to do. Class mismatches are common and rarely disclosed voluntarily.
  3. Are there conditions or restrictions on the licence? Every regulator can impose conditions that limit how, where, or on what value of work a builder may operate. These are publicly visible but easy to miss.
  4. Who is the nominee behind the company licence - and are they still there? Most Australian jurisdictions require a named, personally-qualified individual to underpin a company's licence. If they leave, the company typically has a short grace period, often 28 to 30 days, before its licence can lapse.
  5. Does the licensed entity exactly match the entity named in your contract? The name and ABN on the licence must match the legal entity signing your contract - not the brand on the vehicle, not the director's personal name. A mismatch means the licence may not cover your project at all. The sections below explain how to answer each of these questions in your state and what to do when the answer isn't yes.

Five Things to Check Beyond "Is It Current?"

Whatever state you're in, the following checks apply universally once you've located your builder on the register. The terminology varies by jurisdiction; the risk doesn't.

1. Licence Class - Does It Cover Your Project?

Every licence or registration authorises specific types of work. A builder might be fully licensed - just not for what you're asking them to do.

In NSW, look for "General Building Work" or "Residential Building Work" as the category. A more limited category (such as "Kitchen, bathroom and laundry renovation work") means the builder is not authorised to manage a full new build.

In Victoria, a "Domestic Builder Unlimited" registration is the broadest class for residential work. A "Domestic Builder Limited" registration is restricted to specific work types - bathroom renovations, carpentry, tiling, and so on. If you're building a new home, your builder needs Domestic Builder Unlimited. Note also that Domestic Building Insurance (DBI) is only mandatory in Victoria for contracts over $16,000 - a registered builder is still required for smaller projects, but won't hold a DBI certificate for that specific job.

In Queensland, check for "Builder - Open" (unrestricted) or "Builder - Low Rise" / "Builder - Medium Rise" depending on the scale of your project.

Always confirm the licence class matches the work you're contracting for. Ask your builder directly if you're unsure.

2. Conditions and Restrictions

Regulators can impose conditions on a licence that restrict how or where a builder can work. These conditions are publicly visible on most state registers.

In NSW, conditions are shown directly on the licence entry - look for them in the register result. They can include requirements such as work being supervised by a named individual, or restrictions on the type or value of projects the builder may take on.

In Queensland, the QBCC licence search shows a licence history section with full details of any conditions, demerit points, and rectification directions.

A condition on a licence is not automatically a dealbreaker - but it does require clarification. Ask your builder to explain any conditions, and verify whether those conditions affect your project.

3. The Nominee Risk - Ask Who's Behind the Company Licence

Here's what most homeowners don't realise: a company's builder licence can be suspended mid-build if the key person behind it walks out the door.

When a company holds a builder's licence or registration, it must have a named individual, a qualified person, whose credentials underpin the company's legal standing. If that person resigns or is dismissed, the company enters a grace period. After that window closes, the licence can be suspended or cancelled. Your build could stop, and your insurance may be affected.

That person goes by different names in each state:

  • NSW: Nominated Qualified Supervisor
  • VIC: Nominee Director
  • QLD: Nominee Supervisor
  • SA: Nominated Building Work Supervisor

The grace period before a replacement must be appointed:

  • NSW: 30 days
  • VIC: 30 days (extendable on written request to the VBA)
  • QLD: 28 days
  • SA: 28 days

Note: The ACT uses a similar concept for corporate and partnership licence structures, but the mechanics, including consequences for operating without a nominee, are governed by specific ACT legislation and do not fit the straightforward grace-period model above. If your project is in the ACT, verify the current requirements directly with Access Canberra.

Before you sign, ask your builder: "Who is your nominated supervisor, and are they a permanent director or employee?" This is a completely normal due diligence question, any reputable builder will answer it without hesitation.

4. The Entity Match - Does the Licence Belong to Who You're Actually Contracting With?

This is the check most homeowners skip entirely - and it's one of the most consequential.

A builder's licence is issued to a specific legal entity: either an individual (sole trader) or a company with a specific ABN and registered name. That entity is the only one legally authorised to perform work under that licence. If you sign a contract with a different entity, even one with a similar name, the same director, or the same branded vehicle — the licence may not cover your project at all.

Common mismatches to watch for:

  • Brand vs entity: The company trades as "Premier Building Group" but the licence is held by "PBG Constructions Pty Ltd" (ACN 123 456 789) - a different legal entity. Check the full registered name and ABN, not the trading name.
  • Director vs company: You meet John Smith, who holds a personal builder's licence. But the contract is with "Smith Building Co Pty Ltd." The company needs its own licence - John's personal licence does not cover contracts signed by his company unless he is the nominee for the company's separate licence.
  • Related companies: A builder group may operate multiple entities - one for new builds, one for renovations, one as a holding company. Each must hold its own licence for the work it contracts to perform.
  • Partnership licence: In NSW and some other states, if a builder operates as a formal partnership, the licence must be held in the name of the partnership itself, not one of the individual partners. A partner's personal licence does not cover work contracted under the partnership name. If your builder's business structure is a partnership, confirm specifically which entity holds the licence and that it matches your contract.

What to do: Before signing, ask for the builder's licence number and look up the licence on the state register. Confirm that the exact registered name and ABN on the licence matches the entity named in your contract. If there is any difference, ask for a written explanation before proceeding.

Tip: Check the licence number matches the ABN on the quote or contract — not just the name. Entity names can be confusingly similar; ABNs are unique.

5. Sole Trader or Company — Does It Matter?

In most Australian jurisdictions, both individuals (sole traders) and companies can hold the relevant builder's licence or registration, including for new home builds and major renovations. There is no general requirement that a principal building contractor must operate as a company. What matters legally is that the licensed or registered entity, whatever its structure, is the one that signs your contract.

But there are practical differences worth understanding before you sign:

  • A sole trader is personally liable for all debts and defects. If something goes wrong, you deal directly with that individual - which can be simpler in a dispute, but also means there is no company balance sheet behind the guarantee.
  • A company provides a separate legal entity, which can limit the director's personal liability. If the company fails, the director may not be personally exposed (unless they traded insolvent). This is why checking the company's financial history, not just the individual's licence, matters for larger projects.
  • For major projects, consider whether the entity you're contracting with has the financial substance to complete the work. A sole trader with strong references and no debt history may carry less risk than a recently formed company with unknown financial backing.

Neither structure is inherently safer. What matters is the licence, the track record, and the financial health of the entity, not whether it is a Pty Ltd.

What If Your Builder Is from Interstate?

Do not assume that an interstate builder's licence automatically carries across to your state. The rules are more limited than they appear.

Australia has an Automatic Mutual Recognition (AMR) scheme, but it has three material limitations that consumers often overlook:

  • Queensland does not participate in AMR. A builder licensed in any other state cannot use AMR to work in Queensland, they must hold a QBCC licence. A Queensland-licensed builder cannot use AMR to work interstate either.
  • AMR generally applies to individual licences, not company licences. If your builder is a company, AMR is unlikely to apply. The company will typically need its own licence in the state where your project is located.
  • Some NSW home-building categories are not yet in AMR. General Building Work and related categories are not scheduled to enter AMR in NSW until 1 October 2027. A builder licensed in another state cannot rely on AMR for that work in NSW before that date.

The practical rule: If your builder is based interstate, ask them specifically which licence they hold for the state where your project is located — not which state issued their primary licence. A reputable interstate builder will have already resolved this.

Red Flags to Watch For

When you run a licence check, these results warrant a closer look before signing anything:

  • Suspended licence: The builder is not currently authorised to enter new contracts or carry out work. Do not proceed without a clear explanation and written confirmation the suspension has been lifted.
  • Expired or cancelled licence: The builder's authority has lapsed. Any contract signed with an unlicensed builder carries significant legal and insurance risk - see the full insolvency and legal risk guide for what can happen.
  • No listing found: Search by the builder's ABN or company name. If there is still no result, ask for the licence number and search directly - a genuine licensed builder can provide it immediately.
  • Entity name mismatch: The name on the licence register does not exactly match the entity named in your contract. This is a significant red flag - confirm in writing which entity holds the licence and which entity is performing the work before paying any deposit.
  • "Owner-Builder" licence: An owner-builder authorisation permits someone to build on their own property for their own occupation only - it is not a contractor's licence. An owner-builder cannot legally take payment to build for others. If the result you find is marked "Owner-Builder," that person is not authorised to contract to build your home.
  • Licence class mismatch: The licence found is for a restricted class of work that does not cover your project type or scale.
  • Conditions restricting project value: Some licences carry conditions capping the value of work the builder may undertake. If your contract value exceeds that cap, the builder may not be authorised to take on your project.

This Check Is the Starting Point, Not the Finish Line

A valid licence tells you your builder is currently authorised to work. It doesn't tell you whether they've had disputes with previous clients, whether their company has a history of financial difficulty, who the directors behind the company are, or whether related entities have collapsed before under a different name.

Those questions require checking across entirely different systems: ASIC for company and director records, state tribunals for dispute history, court records for judgments, and the AFSA register for personal insolvency. Each system is separate. None of them talk to each other. There is no single place where it all comes together - which is the structural problem at the heart of consumer risk in Australian construction.

If you want to understand how a full background check differs from a licence check, read our guide: Full Builder Report vs Licence Check: What's the Difference?.

TrustSignal was built specifically to solve this fragmentation problem, aggregating licence registers, ASIC, courts, credit history and tribunals into a single report, so you get the complete picture before you sign rather than after something goes wrong.

Quick Checklist: Before You Sign

  • [ ] Located my builder on the official state register — name and licence number confirmed
  • [ ] Confirmed the licence/registration is current (not suspended, expired, or cancelled)
  • [ ] Confirmed the licence class covers my type of project
  • [ ] Checked for any conditions or restrictions on the licence
  • [ ] Asked my builder who their nominated supervisor is and confirmed they are still with the company
  • [ ] Confirmed the name and ABN on the licence exactly match the entity named in my contract (not the trading name, not the director's name)
  • [ ] Confirmed home warranty insurance is in place - separate topic, but your licence check is step one
  • [ ] If my builder is interstate: confirmed they hold a licence for the state where my project is located
  • [ ] If anything looks wrong: sought advice from a building consultant or solicitor before paying a deposit

This article is provided as a decision aid and general information resource. It does not constitute legal advice. Licence information changes - always verify current status directly with the relevant state regulator before signing a contract. If your licence check raises concerns, consult a building consultant or legal professional.

Sources

Angus

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