Key takeaways
- Verify the plumber's licence free on the CBS public register before you sign anything.
- Get 3 quotes. The middle one is usually the fair price; the outlier tells you who to avoid.
- A real quote is itemised - labour, parts, and call-out shown separately. A bare number is a red flag.
- Independent local plumbers beat franchise call centres on price, honesty, and turning up.
1. Start with the licence
In South Australia every plumbing business must hold a current Plumbing Contractor's licence, and the people doing the trade work must hold worker registration. Both sit under the Plumbers, Gas Fitters and Electricians Act 1995, administered by Consumer and Business Services (CBS).
You can verify any plumber in under a minute. Ask for their licence number, then search it on the CBS public licence register. It is free, instant, and tells you whether the trade is current. A plumber who hesitates to give you a licence number has answered the question for you.
2. Always get three quotes
One quote tells you nothing. You have no way of knowing whether it is fair, padded, or cutting corners. Three quotes give you a spread - and the spread is the information.
The middle quote is usually the fair one. The high quote tells you who is testing the market or carrying call-centre overhead. The low quote is either a hungry independent or a corner-cutter, and the itemised breakdown tells you which. Getting 3 quotes is the single most effective thing you can do to avoid overpaying in Adelaide.
3. Read the quote, not just the number
A trustworthy plumbing quote is itemised. It shows the call-out (if any), the labour, the parts, and any hire equipment like a hydro-jet or CCTV camera as separate lines. That lets you compare like for like across 3 quotes.
Be wary of a single round number with no breakdown, and of hourly-rate quotes with no cap - they can drift. A fixed-price quote given in writing, after the plumber has seen or clearly understood the job, is what you want.
4. Spot the franchise red flags
National franchise plumbing brands are built to extract the maximum from each call, not to give you the fairest price. Adelaide homeowners flag them constantly in local forums.
- A non-refundable call-out fee of $140 or more, just to send someone over.
- A refusal to give any price range over the phone before the call-out.
- Multiple trading names for what is the same operator.
- High-pressure 'today only' discounts on a quote you have not had time to compare.
5. Match the plumber to the job
Plumbing has sub-trades that need their own registration. Gas work must be done by a registered gas fitter who issues a Certificate of Compliance through the Office of the Technical Regulator. Backflow prevention device testing needs a plumber with current SA Water backflow accreditation. New hot water installs must include a compliant tempering valve.
When you describe your job, name the specifics - the brand of your hot water system, whether gas is involved, whether it is a commercial site. It lets the right plumber be matched to the work.
6. Ask four questions before they start
Before any plumber begins work, confirm four things: their licence number (so you can check it), their call-out policy (is it waived if you book the job), the warranty on the workmanship, and a realistic timeframe. A good plumber answers all four without hesitation.