When You Need a Builder Registration in Victoria

What it is

Victoria requires builder registration under the Building Act 1993 (Vic) and licences the entry into major domestic building contracts under the Domestic Building Contracts Act 1995 (Vic). Section 29 of the DBCA is the primary trigger: a builder must not enter a major domestic building contract unless registered in the appropriate class.

The Building and Plumbing Commission (BPC) took over from the Victorian Building Authority (VBA) on 1 July 2025 as the registration authority. Registration is done through the BPC portal.

The $10,000 threshold

Section 3 of the DBCA defines a "major domestic building contract" as a domestic building contract for work with a contract price of more than $10,000. Above that threshold section 29 requires the builder to be registered before entering the contract.

Below $10,000 no registration is required to enter the contract. The DBCA warranties in section 8 still apply to every domestic building contract regardless of value, and the section 11 deposit cap applies to every domestic building contract, but the section 29 registration requirement attaches only above $10,000.

Registration classes

The Building Act 1993 (Vic) and the Building Regulations 2018 (Vic) prescribe several registration classes for domestic building work:

• domestic builder (unlimited): can do any domestic building work up to any value
• domestic builder (limited): can do specific classes of work at any value (typically the trade-based limitations)
• domestic builder (manager): supervisor role
• specialised classes: swimming pool builders, demolishers, restumpers

The distinction matters. A domestic builder (limited) is restricted to the specific work class the registration covers. Doing work outside that class without the appropriate registration triggers the section 29 prohibition.

Consequences of entering without registration

Section 29 is an offence provision. Entering a major domestic building contract without registration carries penalty units, and the contract itself may be affected. Section 133 of the DBCA generally preserves contract validity despite non-compliance except where a contrary intention appears. Section 29 non-compliance produces regulatory consequences (BPC enforcement, licensing sanctions) even where the contract itself continues.

Owner-builder exemption

Owner-builder work is exempt from section 29. An owner who wants to build or renovate their own home can apply for an owner-builder certificate of consent under section 25B of the Building Act 1993 (Vic) rather than engaging a registered builder.

Owner-builder work is not covered by the Home Warranty insurance scheme that commenced 1 July 2026. The owner carries the full risk of any defect or non-completion for work done under an owner-builder certificate.

Additional requirements above $10,000

Once section 29 applies (above $10,000), the DBCA imposes a bundle of other requirements:

• section 31 formalities (written contract with prescribed contents)
• section 30 foundations data before contracting
• section 33 warning next to any price that can change
• section 34 and 35 cooling-off period
• section 25 signed copy to the owner within 5 business days
• section 40 stage-based progress payment percentages

Above $20,000 (the Home Warranty threshold from 1 July 2026, or the legacy DBI $16,000 threshold for pre-1-July-2026 contracts), the builder must also hold Home Warranty or DBI cover before starting work.

The Domestic Building Contracts Amendment Act 2025

The Domestic Building Contracts Amendment Act 2025 (Vic) passed on 11 September 2025 and commences on a day to be proclaimed, no later than 1 December 2026. It restructures parts of the DBCA including moving deposit and progress payment rules to regulations. It does not change the section 29 registration requirement or the $10,000 major domestic building contract threshold.

Building and Plumbing Administration and Enforcement Bill 2026

The Building and Plumbing Administration and Enforcement Bill 2026 will introduce a new principal Act operating by 1 December 2027. Registration content is expected to move to the new Act with revised class structures. TradeForm VIC templates should be reviewed when the Bill commences.

How Victoria compares

Victoria's $10,000 threshold sits between NSW ($5,000) and WA ($20,000). QLD triggers at $3,300 for a regulated contract. ACT is at $12,000. Victoria's section 29 approach (registration required to enter the contract) is stricter than the NSW section 4 approach (registration required to do the work) because it attaches at the contract-formation stage rather than at the performance stage.