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How to check a plumber's licence State by state.

Ask for the licence number and the name it's held under, then look it up on your state's register. Check the name matches, the licence is current, and it covers the work you need. Where we haven't confirmed a state's register, ask that state's regulator. We match you with a licence-checked plumber who does your kind of job, and you can still check it yourself.

Updated 29 October 2026

A shifter, a pipe wrench and pliers on a dark bench

Three steps in any state

  1. Ask for the number and the name

    Get the licence number and the exact name it's under: a person, a company or both. In NSW, Queensland and WA, plumbers have to show their number in ads, so it may already be on their website or van.

  2. Look it up yourself

    Use the register for your state in the table below. Don't rely on a screenshot or a number printed on a card: search for it.

  3. Read the record

    Check the name, the status, the expiry date and the type of work it covers. Look for conditions, suspensions or disciplinary notes.

Where to check, by state

Who regulates plumbing licencesWhere to check
NSWBuilding Commission NSW, with NSW Fair TradingThe NSW Public Register of licences. The NSW Government's page on checking your contractor explains how (see Sources)
VictoriaBuilding and Plumbing Commission (BPC)We haven't confirmed the BPC's register yet. Check with the BPC
QueenslandQueensland Building and Construction Commission (QBCC)The QBCC licensee register and the Occupational plumber and drainer register, both searched through myQBCC (see Sources)
Western AustraliaBuilding and Energy, part of the Department of Local Government, Industry Regulation and SafetyWA Online Licence Search, at ols.demirs.wa.gov.au/search, which covers plumbing and gas fitting
South AustraliaNot yet confirmed by usCheck with the South Australian plumbing licensing regulator
TasmaniaLicences are issued under the Occupational Licensing Act 2005Check with the Tasmanian plumbing licensing regulator
ACTAccess CanberraAccess Canberra's public register. Its page on choosing a tradesperson explains the check (see Sources)
Northern TerritoryNot yet confirmed by usCheck with the NT plumbing licensing regulator

What the record tells you, state by state

NSW. The register shows the name, licence numbers, categories and expiry dates. It also lists "details of any conditions endorsed on the licence", any cancellation or suspension under the Home Building Act 1989 or the Fair Trading Act 1987, public warnings, formal cautions, penalty notices and prosecution results. NSW requires a contractor licence for specialist work of any value, and plumbing, drainage and gasfitting are all specialist work.

Queensland. The QBCC keeps two registers: the "QBCC licensee register" for licensed businesses and an "Occupational plumber and drainer register" to "run a check on your plumber or drainer". A plumbing contractor also needs an occupational licence to do the work itself, so it's worth checking both.

Western Australia. Regulation 11 sets out the licence types: a plumbing contractor's licence, a tradesperson's licence, a tradesperson's licence for drainage plumbing, provisional licences, and a restricted plumbing permit. That permit only covers water heater replacement where no pipe changes are needed.

ACT. Access Canberra's register lets you "view detailed licence statuses, including expired, suspended, surrendered and cancelled licences", with any disciplinary action under the "Details" tab. Plumbers, drainers and gasfitters hold separate classes, such as "Sanitary plumber", "Water supply plumber", "Advanced sanitary drainer" and "General gasfitter".

Victoria. Plumbers are either "registered" or "licensed" for each class of plumbing work, and the classes are "main", "restricted" and "specialised". Only licensed plumbers can issue compliance certificates, so if your job needs one, check the plumber holds a licence for that class, not just a registration.

Tasmania. The 2021 plumbing regulations provide a plumbing contractor licence and practitioner licences: standard, restricted, certifier, certifier restricted, provisional and provisional restricted. Under the Act, nobody may carry on business as a contractor without a licence.

South Australia and the Northern Territory. We haven't confirmed the register details. Ask the plumber for their licence number and check it with the regulator before work starts.

Check these on the record

  • The name matches the person or business you're dealing with.
  • The licence is current: not expired, suspended, surrendered or cancelled.
  • It covers your job. Plumbing, drainage and gas fitting can be separate classes.
  • There are no conditions that rule out your kind of work.
  • If they're quoting and invoicing you, the business holds a contractor licence where your state has one.

If it doesn't check out

Don't let work start. Ask for the exact name the licence is held under and search again. If the number belongs to a different business, ask whose licence covers your job and who you're actually contracting with. If you still can't match it, find another plumber. In Western Australia, knowingly engaging an unlicensed person for plumbing work is itself an offence, with a $5,000 penalty.

What we would do

Look the licence up before the plumber arrives, not after the work is done. On most registers it's a quick search, and it's the one check that tells you the person is allowed to do the job. If you can't find them, ask for the exact licensed name and try again. A plumber who does your kind of job every week will have the number ready.

Questions people ask

Is a gas fitting licence separate from a plumbing licence?

Often. In the ACT, gasfitter classes sit apart from plumber classes. NSW lists gasfitting as its own kind of specialist work. WA's online search covers both plumbing and gas fitting, so you can check either there.

What's the difference between a contractor licence and a plumber's licence?

A contractor licence lets a business contract with you for the work. An individual licence lets a person do it. NSW needs a contractor licence for plumbing work of any value, Queensland expects a contractor to hold an occupational licence as well, and WA and Tasmania both have plumbing contractor licences.

Should the licence number be on the plumber's ads?

In NSW, Queensland and WA, yes. NSW requires the licensee's name and licence number in all advertising, Queensland requires the licensee number, and WA requires the number in any advertisement, including business cards and letterheads.

The licence is under a person's name, not the business. Is that a problem?

Not always. Some states license individuals and businesses differently. Ask who holds the licence for your job, and check that person or business on the register before anyone starts.

Tell us the problem. We'll find the specialist.

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