PLUMBING COMPLIANCE
AS/NZS 3500 compliance documentation: a Victorian plumber's guide
Doing the work to standard is one thing. Being able to prove you did, years later, in an audit or a dispute, is another. This guide covers what compliance documentation means for licensed Victorian plumbers, which standards apply, who issues the Certificate of Compliance, and how to build a record that holds up.
What "compliance documentation" actually means
In Victoria, plumbing work is regulated under the Plumbing Regulations 2018 (Vic) and overseen by the regulator, the Building and Plumbing Commission (which replaced the Victorian Building Authority on 1 July 2025). Doing compliant work is the licensed plumber's obligation. Documentation is the evidence trail that shows the work was done, what it looked like on completion, and that it was checked against the relevant standards.
Good documentation typically includes the job address and date, the type of work, photographs of the completed installation, the standards referenced, the plumber's name and licence details, and a signature. It is what turns "I did the job properly" into something you can put in front of a regulator, an insurer, or a customer.
AS/NZS 3500.1 and 3500.4, the standards behind the work
Two parts of the AS/NZS 3500 series cover the bulk of domestic water plumbing:
- AS/NZS 3500.1, Water services (cold water). Pipe materials and marking, cross-connection and backflow prevention, separation from other services, buried-pipe cover depths, support spacing, storage tanks, disinfection, and hydrostatic testing.
- AS/NZS 3500.4, Heated water services. Tempering and temperature-limiting valves, the temperature-and-pressure relief valve and its drain line, safe trays, insulation, expansion control, and commissioning.
These standards are clause-specific. A documentation record that references the actual clauses, rather than a vague "all compliant", is far more defensible.
Who issues the Certificate of Compliance
A Certificate of Compliance for regulated plumbing work is issued by the licensed or registered plumber who carried out the work, in line with VBA requirements. No app, and no AI, issues it for you. Your licence and your workmanship determine compliance.
What documentation adds is a separate, dated record that backs the certificate up: photo evidence of the installation, the standards it was checked against, and a signed sign-off. In an audit or dispute, "I have a signed, time-stamped record of the completed installation" is a very different position to "I did the work but kept no records."
Why photo evidence matters for the 7-year window
Plumbers in Victoria carry liability for their work for an extended period, commonly cited as a seven-year window. A problem can surface long after the job is closed and the customer has paid. If it does, contemporaneous photos of the completed work are often the single most useful piece of evidence you can produce.
Photos are strongest when they are tamper-evident, captured at the time of the job, stamped with GPS and a timestamp, and hashed so it can be shown the image was not edited or swapped afterwards. A re-hashable photo with a matching stored hash is mathematical proof of the original, not just a claim.
A practical documentation checklist
For each job worth documenting, capture:
- Job address, date, and work type.
- Clear photos of the completed installation and the key compliance points (relief valve and drain line, tempering valve, isolation, rating plate, pipe supports, separations).
- The standards/clauses the work was checked against (AS/NZS 3500.1 and/or 3500.4).
- Your name, licence number, and signature, with the date.
- A copy retained for at least the full liability window, backed up, not just on one device.
How Elemetric fits
Elemetric is a documentation tool built around exactly this checklist, for licensed Australian plumbers. You photograph the job on site; it checks the photos against AS/NZS 3500, lets you review and sign off, and generates a signed PDF record with hashed, GPS- and time-stamped photos and a QR code for verification. It does not certify compliance, you do, it makes the record fast to produce and hard to dispute.
If you would rather skip the AI entirely, Quick Document mode produces the same evidence chain with no AI and no internet. More detail is on the FAQ and About pages.
Certificates, the regulator, and the rules
- Do plumbers need a compliance certificate? The $750 rule
- How to lodge a plumbing compliance certificate in Victoria
- The VBA is now the Building and Plumbing Commission
- Plumbing Regulations 2018 Victoria: a plain-English summary
- AS/NZS 3500 explained: the four parts
- Victorian plumbing licence and registration classes
- What is a PIC number and how to get one in Victoria
- Consent to connect to sewer and water in Victoria
Sanitary plumbing and drainage (AS/NZS 3500.2)
- Minimum grades and falls for sanitary drainage
- Drainage venting rules for Victorian plumbers
- Trap seals and water seal depth
- Inspection openings: where the rules require them
- Gully trap installation rules in Victoria
- Pipe bedding and trenching for drainage
Stormwater drainage (AS/NZS 3500.3)
- Legal point of discharge: how to find it in Victoria
- Downpipe and gutter sizing for Victorian rainfall
- Subsoil and ag-drain rules under AS/NZS 3500.3
- Charged (wet) stormwater systems explained
- On-site stormwater detention (OSD) for plumbers
Guides on specific topics
- Tundish and air gap requirements in Victoria
- Water hammer: causes, fixes and compliance
- WELS and water efficiency for new installs
- DR brass and dezincification in Victorian water
- Rainwater tank plumbing and connection rules
- Greywater systems: what plumbers can and cannot connect
- Hot water temperature rules: stored hot, delivered safe
- Thermostatic mixing valve vs tempering valve
- Tempering valves and the 50°C rule
- PTR valve and drain line: the rules that fail jobs
- Backflow prevention and cross-connection control
- VBA Certificate of Compliance: what it is and who issues it
- What a VBA audit looks at, and the records that protect you
- How long are Victorian plumbers liable? The 7-year window
- What to photograph on every plumbing job
- How long to keep trade job records in Australia
- Safe trays for hot water units: when you need one
- Hot water pipe insulation: R-values and what gets checked
- Thermal expansion control on hot water systems
- Disinfecting a new water service: the chlorination steps
- Non-drinking water and purple pipe: the rules
- Cold water service compliance: a practical checklist
- Hydrostatic testing of water services
- Pipe materials and WaterMark: what is approved
- Isolation valves: where they are required
- Water storage tanks: safe tray, overflow and inlet rules
- Solar and wetback hot water: the compliance points
- Commissioning a hot water system: the final checks
- Vacuum breakers and backflow at hose taps
- Water meter assembly: what is required
Weighing up how to keep your records? See how the options compare: paper, photos on your phone, a general job app, or a purpose-built compliance tool, judged on how well each one proves a job was compliant. Or read the closer look at photo evidence vs paper records for the 7-year window.
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Download on the App Store →This guide is general information for licensed tradespeople, not legal or regulatory advice. The licensed plumber remains solely responsible for compliance with all applicable standards and regulations. Refer to the current AS/NZS 3500 standards and the VBA for authoritative requirements.