When a registered builder is required, and when one is not
| The work | Registered builder? | The line |
|---|---|---|
| Domestic building work — a new home, an extension, structural repairs | Yes | Worth more than $10,000, counting labour, building materials and GST across the whole project |
| The same work at $10,000 or under | Not on the value test | Registration may still be required by the builder's category or class of work |
| Plumbing work of any kind | Different rule. Licensed or registered plumber, at any value — see the next section | |
Source: Building and Plumbing Commission, Engaging a builder, read 3 September 2026 (that page states it was last updated 30 June 2026). The BPC is the authority on its own rules — if your job sits near the line, ask them, not us.
“Registered” and “licensed” are two different words in Victoria
Most states use one word. Victoria uses both, and for plumbing they mean genuinely different things. The BPC says a plumbing practitioner must be licensed, or registered and working under the supervision of a licensed plumber, or in training under that supervision.
| Licensed plumber | Registered plumber | |
|---|---|---|
| Can work unsupervised | Yes | No — works under a licensed plumber's supervision |
| Can issue a compliance certificate for the work | Yes | No. Only a licensed plumber can |
| Must hold insurance protecting you against defective plumbing work | Yes | Not stated by the BPC for this category |
| Can supervise others in the same class | Yes | No |
Why this matters to you and not just to them. The compliance certificate is the document that says the work meets the plumbing regulations, and a registered plumber cannot issue one. So if a plumber turns up alone and is registered rather than licensed, the certificate has to come from the licensed plumber supervising them — and that is a fair question to ask on day one rather than at the end.
Source: Building and Plumbing Commission, Engaging a plumber, read 3 September 2026 (last updated 30 June 2026 per that page).
Check a Victorian licence at the regulatorThe regulator has a new name, and that changes what you search for
Victoria's building and plumbing regulator now trades as the Building and Plumbing Commission, at bpc.vic.gov.au. Its own site footer states it plainly: “Victorian Building Authority, trading as the Building and Plumbing Commission”.
That is worth knowing for two reasons. Older guides — including some still sitting at the top of search results — send you to the VBA, and the licence check now lives with the BPC. And the BPC has also absorbed the domestic building insurance side: it states that “as of 1 July 2025, we manage all Domestic Building Insurance (DBI) policies previously provided by the Victorian Managed Insurance Authority (VMIA)”. One body, one place to look.
Sources: bpc.vic.gov.au site footer, and Your insurance protections explained, both read 3 September 2026.
What you lose if the builder is not registered
The BPC does not soften this. Using an unregistered builder or tradesperson for work valued over $10,000 puts you “at risk of having no protection from poor quality work”, and it states that “the work won't be covered by domestic building insurance”.
Read that second half twice. It is not that a claim would be harder. It is that the insurance which exists to catch you when a builder dies, disappears or goes under is not there at all. That is the actual price of the cheaper quote.
Source: Building and Plumbing Commission, Engaging a builder, read 3 September 2026.
What the insurance behind it actually covers
| Domestic Building Insurance | What the BPC publishes |
|---|---|
| Maximum cover, per home | $300,000 for policies issued on or after 1 July 2014; $200,000 before that |
| Structural defects | Up to 6 years after the work is finished or the contract ends |
| Non-structural defects | Up to 2 years after the work is finished or the contract ends |
| Incomplete work | Up to 20% of the building contract price |
| What lets you claim at all | The builder has died, disappeared or become insolvent — or, for policies from 1 July 2015, has failed to comply with a Tribunal or Court order |
The last row is the one people misread. Domestic building insurance is not a general defects warranty you can claim on because the tiling is poor. Something has to have happened to the builder first. For an ordinary dispute with a builder who is still trading, the path is the BPC's dispute resolution, not a claim.
Source: Building and Plumbing Commission, Your insurance protections explained, read 3 September 2026 (last updated 18 August 2026 per that page).
Three questions worth asking before you say yes
- “Are you registered, and in which class?” Victoria issues a photo ID card to registered practitioners listing the category they may work in. Ask to see it — the BPC tells homeowners to.
- “Is this job over $10,000 all up, labour and materials with GST?” If yes, a registered builder is required. If it is close, treat it as though it is.
- “Who is issuing the plumbing compliance certificate?” Only a licensed plumber can. If the person on site is registered rather than licensed, that certificate is coming from somebody else, and you want their name now.
Check it before the work starts
The Victorian register is public and free, and it takes about a minute. A licensed or registered practitioner will hand you the details without being asked twice.
The how-to for every state and territory is here: how to check a tradie's licence yourself. And the rule that has no dollar figure in it anywhere in Australia is here: electrical and plumbing work always needs a licence.
This page explains what the Building and Plumbing Commission publishes about Victorian registration and licensing. It is general information, not legal advice, and it is not a licence check. Yamate is software for tradespeople. We do not issue, assess, endorse or certify any licence or registration, and we do not decide whether one is required for your job — the BPC does. No regulator has reviewed this page. Every figure above was read at the BPC's own pages on 3 September 2026 and is linked beside the claim; rules, limits and page names change, so check the date here against theirs. We have deliberately not published the contract value at which domestic building insurance must be taken out, because we did not read it at the regulator on the day. Victoria only — the numbers here do not apply in any other state.