LEGAL & POLICIES
Licences & Accreditations
Anyone can say they are licensed. Here is every licence, registration and accreditation we hold, what each one means, and where you can check it yourself.
Proximity Plumbing Pty Ltd ATF The Demirdonder Family Trust
ABN 22 729 887 835 · NSW Contractor Licence 285594C
229 Bronte Road, Waverley NSW 2024
Last updated: 18 October 2026
Licence: Check 285594C
Need a copy of a licence?
Our office team will answer by phone or email. For an urgent leak or gas smell, call 0420 102 394, 24/7.
Our contractor licences
Proximity Plumbing holds NSW Contractor Licence 285594C. A contractor licence is what allows a business to quote for, contract for and carry out plumbing work in New South Wales. It is issued by Building Commission NSW and can be checked by anyone, at any time.
| Detail | Company licence | Supervisor licence |
|---|---|---|
| Licence holder | Proximity Plumbing Pty Ltd | William Demirdonder, Director |
| Licence number | 285594C | 275278C |
| Classes | Plumber, Roof Plumber, Drainer, Gasfitter, LP Gasfitter | Plumber, Roof Plumber, Drainer, Gasfitter, LP Gasfitter |
| Expires | 4 August 2031 | 6 November 2030 |
| Issued by | Building Commission NSW | Building Commission NSW |
| Check it yourself | Check 285594C | Check 275278C |
To check it, open the NSW Government licence check, search for 285594C and confirm the name, that the licence is current, and the classes of work it covers.
Our plumbers' licences
The contractor licence covers the business. The person who turns up at your door is licensed too: every job is done by a plumber who holds their own NSW licence, or by an apprentice working under a licensed plumber's supervision.
You are always welcome to ask your plumber to show you their licence card when they arrive. Each plumber's profile on our Meet the Team page shows their licence details where we have them on file.
Business registration
We are a registered Australian company, not a sole trader.
| Registration | Number | Check it yourself |
|---|---|---|
| Australian Business Number (ABN) | 22 729 887 835 | Look up our ABN |
| Australian Company Number (ACN) | 606 640 215 | Australian Business Register |
| GST | Registered | Look up our ABN |
Accreditations and checks
On top of the licence, our team holds the accreditations and checks below. Each one has a link so you can see what it involves.
| Accreditation | What it means for you | Find out more |
|---|---|---|
| Licensed gasfitter (NSW) | Licensed to install and repair gas appliances and gas pipework. | Our gas fitting service |
| Sydney Water registered backflow tester | Registered with Sydney Water to test, certify and report on the backflow prevention devices that protect the drinking water supply. | Sydney Water backflow prevention |
| Restricted electrical licence | Licensed to safely disconnect and reconnect equipment like hot water systems, so you do not need to book a separate electrician. | About this NSW licence |
| TMV accredited | Accredited to install, test and service thermostatic mixing valves, which keep hot water at a safe temperature in homes, aged care and schools. | Our hot water services |
| Pipe relining certified | Certified to repair cracked and root-damaged pipes from the inside, often with no digging. | Our pipe relining service |
| Working at heights and confined spaces | Trained for roof work and confined spaces like pits, tanks and crawl spaces, with the right safety gear on every job. | SafeWork NSW safety guidance |
| National Police Check | Every plumber on our team holds a current National Police Check. | How National Police Checks work |
| Working With Children Check | Our plumbers hold a NSW Working With Children Check for work in family homes, schools and childcare centres. | How the NSW check works |
| Cm3 certified | Cm3 prequalified: the contractor compliance check used by strata, property and commercial managers across Australia. | What Cm3 prequalification means |
Insurance
Every job we do is insured, so you are protected if something goes wrong.
| Cover | Insurer | Amount | Current cover |
|---|---|---|---|
| Public liability | Zurich Australian Insurance Limited | $20 million any one occurrence | 15 December 2025 to 15 December 2026 |
| Products liability | Zurich Australian Insurance Limited | $20 million any one occurrence and in the aggregate | 15 December 2025 to 15 December 2026 |
| Workers compensation | icare Workers Insurance (NSW) | Our whole team | 31 January 2026 to 31 January 2027 |
Memberships
- Master Plumbers Association of NSW. We are members of the industry association for plumbing businesses in New South Wales. Master Plumbers Association
How to check any plumber
Whoever you book, these checks take two minutes and are worth doing.
- Ask for the licence number before anyone comes out. A licensed plumber will give it to you straight away.
- Look it up on the NSW Government licence check. Make sure the name matches the business you booked, the licence is current, and its classes cover the work. Gas work needs a gasfitting licence.
- Ask to see the licence card when the plumber arrives.
- Get the price in writing before any work starts.
If a plumber cannot tell you their licence number, do not let them in. Ours is 285594C.
Questions about our licences
If you need a copy of any licence or accreditation for a job, or want to check something on this page, call our office on (02) 9388 7292 or email admin@proximityplumbing.com.au.
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