9 Questions to Ask Before You Hire a Plumber

The first clue is usually a sound. A drip that was not there last week has become a stain on the ceiling, or the hot water has gone cold halfway through a shower, and the decision is suddenly made for you. Someone has to come out. You have to choose who.

Most of that choice is settled before anyone picks up a tool. The jobs that go badly are rarely the ones where the plumber could not do the work. They are the ones where nobody asked what the visit would cost, who was turning up, or what would happen if the problem turned out to be bigger than it looked from the doorway.

Nine questions close most of that gap. Ask them before you book, not after the invoice arrives.

1. Are you licensed, and what is the licence number?

Plumbing is licensed by state and territory, not nationally, so the answer will differ depending on where you live. Ask for the licence number and the name it is held in. Then check it against your state regulator’s public register, which is free and takes about a minute. A number that does not match the business name on the quote is worth a second question.

Some work sits outside a plumbing licence altogether. Gas fitting, electrical work and work on some water and drainage assets are separately licensed, and a general plumber may not be able to sign off every part of the job. If the job includes gas, ask who holds that licence.

2. What does the call-out fee cover?

Call-out fees, hourly rates and minimum charges are three different things, and a low headline number often means a high minimum. Ask for the fee that applies from the moment the van arrives, and what happens if the job takes twenty minutes.

3. Is the price fixed or estimated?

A fixed price for a described job is a commitment. An estimate is a guess with a friendly face. Both are legitimate, but you should know which one you have been given before work starts, and you should know what happens if the price moves.

4. What happens if you find something else?

Older homes hide surprises. The question is not whether extra work is sometimes needed, because it is. The question is whether anyone stops to tell you before doing it, and whether you get to decide. Ask for the process in advance: a phone call, a revised price, and your agreement before anything else comes apart.

5. Who is coming to the house?

Larger businesses send subcontractors, which is normal and not a warning sign on its own. It matters for two reasons: the person doing the work should still be licensed, and the business you booked should still be the one standing behind it. Ask who will attend, and ask whether they are covered by the same insurance and warranty.

6. Are you insured for damage?

Ask about public liability cover and whether the business holds it, not whether it “should be fine”. A plumber working inside a wall or under a floor can cause damage that costs more than the repair itself, and a business without cover is a problem you inherit.

7. Will I get the work in writing?

Ask for a written quote, a written description of what was done, and any compliance certificate the work requires. Some plumbing and gas work must be certified, and that paperwork matters when you sell the house or make an insurance claim. A business that treats a request for it as an insult is telling you something.

8. What does after-hours work cost?

Emergency rates are real and they are higher. Ask what the after-hours call-out looks like now, while the house is dry and the sun is up. Knowing the number in advance stops a stressful night becoming an expensive argument.

9. How will the site be left?

Old pipes, packaging, wet towels and a hole in the plaster. Ask who removes what, and whether making good the surface afterwards is part of the job or a separate trade you will need to book.

The jobs that should not wait for a quote

Some faults are not a shopping decision. If water is coming through a ceiling, a toilet is backing up into the house, or the main supply has failed, the right move is the first available licensed plumber, not a week of comparisons. The situations that count as urgent are set out in this list of common emergency plumbing problems, and they are worth knowing before you need them.

There is one exception that outranks all of them. If you can smell gas, or hear it escaping, do not wait for anyone. Leave, keep others out, and call your gas distributor or emergency services from outside. Before that moment arrives, it is worth knowing how a gas leak announces itself at all.

What a fair quote looks like

Get at least two, and read them next to each other rather than one after the other. A quote that is half the price of the others is usually describing less work, a cheaper part, or a price that will move once the job is open. A quote that is double is not automatically better either, though it may include making good, waste removal or a longer labour warranty. Price the scope, not the hour.

Smaller jobs are harder to compare this way, and that is where a call-out fee and a minimum charge matter more than a fixed price. Ask both plumbers the same four questions and the difference between them usually becomes obvious.

Watch the early signs, not the emergency

The other half of choosing well is not waiting for a burst pipe to make the decision for you. Slow drains, a hot water service that takes longer than it used to, damp patches that keep coming back and a water bill that has crept up are all cheaper to deal with early. The warning signs worth acting on are the ones that repeat, not the ones that happen once and stop.

One last check before you book

Before you confirm the booking, run the list once more. Licence number checked against the regulator. Written quote with the fee explained. Someone named, insured and answerable for the work. A plan for what happens if the job grows. If a business is happy to answer all of it in writing, you have probably found someone worth keeping.

Sources: state and territory consumer affairs and plumbing regulators publish free licence registers; the Australian Competition and Consumer Commission (accc.gov.au) covers your rights on quotes, contracts and workmanship.