Hiring licensed trades: electricians, plumbers and other regulated work

Electrical work and plumbing work require a licence in every Australian state and territory, with no cost exemption, while general building and renovation work only needs one once the job passes a dollar threshold that differs state to state. In NSW that specialist-work rule covers electrical wiring, plumbing, drainage, gasfitting and air conditioning work, and it applies "regardless of the cost of the work" and whether the job is residential, commercial or industrial, according to the NSW Government's categories of building and trade work. General residential building work in NSW only needs a contractor licence once the job is worth more than $5,000 in labour and materials.

Victoria runs a similar split. Plumbers, gasfitters and drainers must be registered or licensed with the Building and Plumbing Commission (BPC) to do plumbing work at any value, and must provide a compliance certificate once the job passes $750, per Consumer Affairs Victoria. General domestic building and renovation trades only need to be a registered building practitioner once the total job value exceeds $10,000. Electrical work in Victoria is licensed separately again, through Energy Safe Victoria, at any value.

Start your search from licensed trade services on Digital Pages, then run the checks below before any money changes hands.

Which trades need a licence, no matter the job size?

Electrical work and plumbing, drainage and gasfitting work are licensed in every state at any dollar value. Energy Safe Victoria states plainly that Victorians should "always engage a registered electrical contractor," and doing electrical work yourself, or hiring someone unlicensed to do it, is illegal there. NSW applies the same no-threshold rule to electrical, plumbing, drainage, gasfitting and air conditioning and refrigeration work.

Outside those specialist trades, most general building and renovation work only needs a licensed contractor once the job passes a state-set dollar figure: $5,000 in NSW and $10,000 in Victoria for standard domestic building work. Below that figure, some states still require registration for specific tasks such as re-stumping or demolition regardless of cost, so check the category of work, not just the price, before assuming a licence isn't needed.

How do I verify a trade licence in each state?

Every state runs a free public register you can search before you hire.

• NSW: use Service NSW's licence check tool, which covers residential building work, wiring, plumbing, draining, gasfitting and air conditioning or refrigeration licences. Search by name, licence number, ABN or location, and the result shows expiry, conditions, suspensions and any public warnings or prosecution history.
• Victoria: for electrical licences, use Energy Safe Victoria's public register, searchable by registration number, business name, suburb or postcode. General building and plumbing registration sits with the Building and Plumbing Commission.
• Queensland: the QBCC licensee register lets you check a builder's or trade contractor's history before you sign a contract, alongside separate registers for suspended, cancelled and excluded licensees.

Checking the register isn't optional if the job is a specialist trade or above your state's threshold. If a name doesn't appear, or the licence shows as suspended, don't proceed until you've confirmed why.

What does public liability insurance actually cover?

Public liability insurance covers a tradesperson's legal costs and compensation if their work injures someone or damages property while the job is underway, for example a burst pipe that floods a neighbouring unit, or a tool that damages a client's floor. It's cover for the tradesperson's liability during the job, not cover for the quality or completion of the finished work.

That's a different product to home warranty insurance, which protects the homeowner, not the tradesperson. In NSW, the Home Building Compensation Fund (HBCF) is described by icare as stepping in "only as a last resort, when a licensed builder or tradesperson is no longer able to meet their legal responsibilities" through insolvency, death, disappearance or licence loss. It doesn't cover day-to-day disputes, delays or defects a builder is still willing and able to fix. Queensland's equivalent is the Home Warranty Scheme, which applies to residential building work valued at more than $3,300 and covers up to $200,000, funded by a premium the contractor pays. Ask to see the certificate of insurance issued in your name before you pay a deposit, not just a policy number quoted verbally.

Do I need a written quote, and what should it include?

Get a written quote before work starts, not a verbal price. Consumer Protection WA advises getting at least three written quotes and says plainly: "Get written quotes, not verbal so you have a record of the agreed price." A proper quote should include the tradesperson's contact details, a description of the job, material and labour costs, a completion timeframe, and any conditions that could add to the price.

Once you accept a written quote it becomes the agreed price. Tradespeople must get your permission before doing extra work beyond the quote. If they proceed without asking, Consumer Protection WA states you have no obligation to pay for it. If you do approve a variation, get that in writing too, even as a text message, so there's a record of what changed and why.

What can go wrong if I hire someone unlicensed?

An unlicensed tradesperson doing specialist work such as electrical or plumbing is committing an offence in every state, and you carry the practical risk as the homeowner. The work isn't backed by public liability insurance you can rely on, it isn't covered by home warranty schemes, and it can create disclosure problems and voided cover with your own home and contents insurer. Faulty unlicensed electrical or gas work is also a genuine safety hazard, not just a compliance issue.

You also lose your legal options. A licensed tradesperson's work is backed by the regulator's complaints and disciplinary process and, above the relevant threshold, by home warranty cover. An unlicensed operator gives you neither, leaving court action as the only real recourse if the work fails. See consumer rights when hiring a tradesperson for what to do if a job goes wrong even with a licensed trade.

How should emergency call-out pricing work?

An emergency call-out fee is only enforceable if it's disclosed in the quote before the tradesperson starts, including any after-hours, weekend or public holiday loading. Consumer Protection WA is explicit: "If the call out fee is not included in the quote you do not have to pay them." Ask for the call-out fee and hourly rate over the phone before you agree to a booking, and get it confirmed in writing, even a text or email, once the tradesperson is on the way. A legitimate operator won't hesitate to put a number in writing before they arrive.

For the full state-by-state register list, see how to check a builder's licence in every state.

Frequently asked questions

Can a handyman legally do electrical or plumbing work?

No, not in any state. Electrical and plumbing work is specialist work regulated regardless of price, so only a licensed electrician or a licensed or registered plumber can carry it out, even for a five-minute job.

Is a quote the same as a contract?

Once you accept a written quote, it becomes the binding agreement on price and scope. Verbal quotes are not enforceable in the same way, which is why regulators including Consumer Protection WA tell homeowners to get quotes in writing before work starts.

What's the difference between public liability insurance and home warranty insurance?

Public liability insurance covers a tradesperson's legal costs if their work injures a third party or damages property while the job is underway. Home warranty insurance is separate cover, tied to the homeowner, that pays for incomplete or defective work if the builder becomes insolvent or loses their licence.

Does hiring an unlicensed tradesperson void my home insurance?

It can. Unlicensed work falls outside the protections and compliance certification your home and contents insurer expects, and it isn't covered by home warranty schemes, so a claim linked to that work can be refused.

Are call-out fees legal if I wasn't told about them upfront?

A call-out fee is only enforceable if it's disclosed in the quote before the tradesperson starts work. Consumer Protection WA advises that if the call-out fee isn't in the quote, you don't have to pay it.

Sources

• NSW Government — Checking your contractor or tradesperson is qualified
• NSW Government — Categories and classes of building and trade work
• Service NSW — Check a builder or tradesperson licence
• Consumer Affairs Victoria — Home improvements costing $10,000 or less
• Energy Safe Victoria — Electrical workers
• Energy Safe Victoria — Search a public register
• QBCC — Our lists and registers
• QBCC — Queensland Home Warranty Scheme
• icare — What is icare HBCF and why do I need it?
• Consumer Protection WA — Ask us: estimates and quotes