How to spot a dodgy plumbing quote on the Gold Coast (a plumber's honest guide)

A quote is not just a price, it is the clearest preview you will ever get of how a tradesperson runs their business. Sloppy quote, sloppy job. Vague quote, surprise invoice. Pressure quote, someone who benefits from you not thinking. Here is how to read one properly.

First, the two checks that take three minutes

1. Check the licence, actually check it

In Queensland, plumbing, drainage and gas work is licence-only. Not "should be licensed", legally must be. Every legitimate operator has a QBCC licence number and will hand it over without hesitation. The check most people skip: go to the QBCC website and search the licence register for the name or number. Thirty seconds. You will see whether the licence is current, what class it covers, and whether it actually belongs to the person quoting you. A "plumber" who gets cagey about their licence number has answered your question already. Ours is on our licences and credentials page, that is where every plumber's should be.

2. Confirm insurance exists

Ask one question: "Are you covered for public liability on this job?" A professional answers instantly because they pay for it every year. If the answer wanders, the risk of anything going wrong on your property is quietly being carried by you.

The red flags in the quote itself

• One number, no scope. "$2,400 for the bathroom" with no breakdown of what is included is not a quote, it is an opening position. When the job "turns out bigger than expected", there is no document to hold anyone to.
• "Supply and install" with no fixture detail. Which toilet? Which mixer? A dodgy quote stays silent so the cheapest possible fixture can be swapped in later. A proper quote names brands and models, or clearly prices your owner-supplied fixtures.
• No mention of compliance paperwork. In Queensland, notifiable plumbing work gets certified, and gas work requires a compliance certificate, every time, no exceptions. A quote that never mentions certification is telling you the paperwork is not coming. No certificate means problems with insurance claims and resale later, and on gas it is a safety issue, not an admin issue.
• Cash price, no paperwork. A discount for cash is sometimes legitimate. A price that only exists if there is no invoice is not a discount, it is the removal of every protection you have: no warranty, no certificate, no proof the work happened.
• No fixed price where one is clearly possible. Some jobs genuinely cannot be fixed-priced before opening things up, an under-slab leak, a strip-out on an old bathroom. But a tap swap, a hot water replacement, a toilet install? Standard jobs price cleanly. "We'll see how we go" on a standard job means the meter is running. Our approach is written fixed prices before work starts, and how we get there is on our how we work page.
• Vagueness about who does the work. "My guys will handle it", which guys, licensed for what? On gas especially, the person connecting is legally required to hold the gas licence. It is fair to ask exactly who turns up.

The pressure tactics, and what they mean

Price tricks are annoying. Pressure tricks are the real tell, because honest operators never need them.

• The today-only price. "I can do this number if you sign now." Real costs do not expire overnight. The urgency exists to stop you getting a second quote, ask yourself why a fair price would fear comparison.
• The fear escalation. Every trade has genuine urgent findings, gas leaks are real, so is a failing flexi hose. The dodgy version is the cascade: a dripping tap becomes "your whole system is about to go" within ten minutes, always with a big number attached and always needing a decision on the spot. A professional shows you the problem, explains the honest options, and gives you room to decide. If something is genuinely dangerous, they make it safe first and quote the repair separately, that is the behaviour difference.
• The night-callout ambush. Emergencies are where the worst pricing behaviour lives, because you are stressed, wet and captive. The protection is simple: ask for the callout fee and the rate on the phone, before anyone is dispatched. An honest emergency plumber tells you on the call. We publish our approach on the pricing guide, and after-hours is quoted on the phone, not revealed on the invoice.
• The trashing of the previous plumber. Sometimes prior work genuinely is bad. But "whoever did this was a butcher, it all has to come out" is also the oldest upsell in the book. Ask them to show you specifically what fails and why. Real defects are demonstrable, invented ones go vague under questioning.

What a professional quote actually contains

Hold any quote against this list, it is the whole test:

• The business name, ABN and QBCC licence number printed on it.
• A written scope: what is being done, room by room or item by item.
• Fixtures and materials named, brand and model, or "owner supplied" stated.
• A fixed price where the job allows it, or a clearly explained structure where it genuinely cannot be fixed, plus how variations get approved (in writing, before the extra work, never after).
• Compliance stated: what will be certified and what paperwork you receive, especially on gas.
• Warranty terms: what is covered and for how long. Ours is in writing on every job, see the workmanship guarantee.
• Payment terms that follow the work, a deposit on larger jobs is normal, full payment before anything happens is not.

Notice nothing on that list is about being the cheapest. Two honest quotes can differ by hundreds of dollars for fair reasons, different fixtures, different site access, different levels of finish. The point of the list is that both honest quotes will pass it, and the dodgy one will not.

Cheapest, dearest, or neither

The uncomfortable truth about picking on price alone: the cheapest quote is often cheap because something is missing, the compliance certificate, the licensed gasfitter, the actual fixture you thought you were getting, insurance, or any intention of coming back if something leaks. The dearest is not automatically the best either. The reliable middle path is to compare quotes only after they all pass the checklist above, then weigh price against how they communicated, whether they showed up when they said, and what their reviews say about the aftermath, because reviews describe the part of the job that happens after the invoice is paid.

Five questions that expose a dud in one phone call

• "What's your QBCC licence number?" (Hesitation is the answer.)
• "Will I get a compliance certificate for the gas work?" (Anything other than "yes, always" on gas is disqualifying.)
• "Is that price fixed, and what happens if you find something extra?" (Listen for: variations in writing, approved by you first.)
• "What's the warranty on the workmanship, and is it written down?"
• "What's the callout fee and rate before anyone comes out?" (For emergencies, if they won't say on the phone, ring someone who will.)

If you've already been stung

Do not pay for undocumented "extras" you never approved, ask for the variation in writing and take a breath before transferring anything. Photograph the work as it stands. If the work is defective or the operator unlicensed, the QBCC takes complaints and has real teeth on defective building work. And on gas: if you suspect uncertified gas work in your home, treat it as a safety issue and get it inspected by a licensed gasfitter promptly, not at the next renovation.

We wrote this because the dodgy end of the trade costs everyone, homeowners first, but honest plumbers too. If you want a quote you can hold us to, in writing, licence number printed on it, that is just how we operate: ring 0472 657 042 or use the contact page. And if you just use this checklist on three other plumbers and never call us, honestly, that is a good outcome too.