Domestic Building Contracts Act 1995 (Vic)

TL;DR

The Domestic Building Contracts Act 1995 (Vic) is the Victorian Act governing residential building contracts. It sets the written-contract threshold (currently $10,000), the cooling-off period (5 business days), deposit limits (5% or 10% depending on contract value), prohibited clauses (cost escalation clauses for contracts under $500,000, cost-plus for under $1M), and statutory progress payment percentages for stage payments. The Domestic Building Contracts Amendment Act 2025 commences 1 December 2026 and changes the deposit and progress payment rules. Every Victorian residential builder operating on contracts over the threshold must comply.

Scope

The DBCA covers domestic building work, defined broadly:

Work type	Within scope
New single dwelling	Yes
Alterations and additions to a home	Yes
Renovation work above the threshold	Yes
Owner-builder work (where the owner engages trades)	Yes (modified application)
Commercial / industrial	NO (commercial contracts)
Builder’s own home build	NO (no contract; builder is owner)

Works below the written-contract threshold ($10,000) don’t require a DBCA-compliant written contract but still attract other consumer protections.

Key obligations

Written contract threshold

A written contract is required for domestic building work valued at $10,000 or more. Below this threshold, a verbal or simple written arrangement is allowed. Above it, the contract must:

Be in writing.
Be signed by both parties.
Include the specified content (price, scope, plans, payment schedule, defects, insurance disclosure).

Cooling-off period

Within 5 business days after signing the contract, the client can rescind without penalty (refund of any deposit, less reasonable costs incurred).

For prefabricated home sales, the cooling-off can be longer.

Builders must:

Notify the client of the cooling-off right at signing.
Provide the contract at signing (not later).
Honour rescission during the period.

Deposit limits

Contract value	Maximum deposit
Less than $20,000	10%
$20,000 to $500,000	10% (commonly 5% as industry practice)
Over $500,000	5%

Deposits beyond these limits are recoverable by the client.

Prohibited clauses

The DBCA prohibits certain contract terms:

Cost escalation clauses for contracts under $500,000 (other than as standard provisional sums).
Cost-plus clauses for contracts under $1,000,000 (with limited exceptions).
Unfair contract terms generally (Vic Australian Consumer Law overlay).

Including a prohibited clause makes that clause unenforceable; in some cases, voids the contract.

Statutory progress payment percentages

The DBCA sets maximum percentages for stage payments to prevent front-loading:

Stage	Maximum %
Deposit	5-10%
Base	15-20%
Frame	20-25%
Lockup	20-25%
Fixing	25-30%
Practical completion	5-10%

A schedule front-loaded above these percentages is non-compliant. The client can demand reform of the schedule.

Required contract content

A compliant DBCA contract includes:

Names, addresses, licence numbers.
Site address.
Detailed scope (drawings + specifications schedule).
Total contract price.
Payment schedule.
Variations procedure.
Completion date and liquidated damages clauses.
Defects liability period (minimum 6 months major defects, 3 months minor defects on residential).
Insurance disclosure (DBI / HBA / building works).
Cooling-off notice (highlighted).

Defects liability

The DBCA establishes statutory implied warranties:

Work performed in a workmanlike manner.
Materials new and good quality.
Work fit for purpose.
Work meets the agreed plans and specifications.
Work complies with all relevant law.

Warranty period: 6 years for structural defects, 2 years for non-structural (under the Building Act 1993 layered with DBCA implied warranties).

Domestic Building Contracts Amendment Act 2025 (commences 1 December 2026)

Key changes from the Amendment Act:

Change	Detail
Deposit caps reformed	New tiered deposit structure
Progress payment percentages updated	Revised stage maximums
Variations procedure tightened	Stricter written-and-signed requirements
Defects period extended	Possibly to align with national model
Penalties increased	Higher fines for non-compliance

Builders should review their template contracts before 1 December 2026 to ensure compliance.

Enforcement

The DBCA is enforced by:

Consumer Affairs Victoria (CAV): general consumer protection role.
Victorian Building Authority (VBA): builder licensing, technical compliance.
VCAT (Victorian Civil and Administrative Tribunal): dispute resolution.

Builders facing DBCA-related complaints typically deal with CAV first, then VCAT if unresolved.

Common builder issues

Verbal variation done on a DBCA-covered job: unenforceable. Builder did the work, can’t recover the cost.
Deposit above the statutory limit: client demands refund. Builder must comply.
Front-loaded payment schedule: client refuses to pay; non-compliant claim.
Cooling-off notice not highlighted: client argues contract is voidable for non-disclosure.
Cost-plus clause on a $400k build: void clause. Builder cannot rely on cost-plus mechanism.

For builders

Use a current HIA Vic or MBA Vic template contract: typically DBCA-compliant out of the box.
Highlight the cooling-off notice prominently on the front page.
Cap your deposit at 5% for $20k+ contracts: industry-standard practice that avoids any deposit-cap argument.
Document every variation in writing, signed before work starts: the only enforceable variation under DBCA.
Review your template against the Amendment Act 2025 changes before 1 December 2026.

Note: this article is general information, not legal advice. If you’re facing a DBCA dispute, engage a specialist building lawyer.

References

DBCA 1995 (Vic) full text: https://content.legislation.vic.gov.au (verified 2026-05-15).
Consumer Affairs Victoria: https://www.consumer.vic.gov.au (verified 2026-05-15).
Victorian Building Authority: https://www.vba.vic.gov.au (verified 2026-05-15).