Modular Home Warranty and Defects: What Happens After Handover

If you find a defect after handover, record it and notify your builder in writing. Check the contract, applicable legal rights and any insurance deadlines. The end of a contractual defects period does not automatically end every right to a remedy.

A modular project can involve a manufacturer, transporter and site builder. Agree a clear reporting contact before handover, so you know where to start if something goes wrong.

Three protections to understand

Contractual defects liability period

The defects liability period, or DLP, is set by your building contract. It describes the period and process for reporting defects after handover. Read the clause for its start date, notification method and repair arrangements.

Do not assume every contract gives the same number of months or the same repair deadline. Keep a copy of the handover record and any agreed defects list.

Statutory warranties and consumer rights

Statutory building warranties are rights under the applicable state or territory law. They are separate from the DLP. Australian Consumer Law guarantees may also apply to the products and services supplied.

A manufacturer's warranty or a contract cannot remove applicable consumer guarantees. Which remedies apply depends on the work, supplier and circumstances. Seek advice if someone says all rights ended with the contract's defects period.

Home warranty or building compensation insurance

This is different from ordinary home and contents insurance. It may protect eligible owners against incomplete or defective building work under a state scheme. Cover, exclusions and claim triggers vary.

Victoria now distinguishes the new Home Warranty scheme from legacy domestic building insurance. Do not apply one scheme's claim triggers to every contract or state. Check the contract date, notice or certificate of cover and the applicable scheme guidance.

Check the deadline for your state

There is no single national modular-home warranty period. A contractual defects period, an insurance claim window and a deadline for legal action can all be different.

New South Wales

NSW Government guidance states six years for major defects and two years for other defects for contracts signed on or after 1 February 2012. The periods run from completion of the work.

Extra rules can apply when a loss becomes apparent near the end of a period. A complaint or repair discussion is not a substitute for checking the deadline to start proceedings. Use the current NSW building-dispute guidance or obtain legal advice promptly.

Victoria

Consumer Affairs Victoria describes statutory building warranties applying for up to 10 years after the occupancy permit or certificate of final inspection. Do not read that as an unconditional 10-year insurance policy.

BPC's project guidance identifies Home Warranty for eligible domestic work under contracts signed on or after 1 July 2026, subject to the value, building and exclusion rules.

Consumer Affairs Victoria's scheme guidance explains that cover can respond when a builder cannot or will not complete or fix covered work. A builder still trading does not automatically rule out a claim.

Contracts signed before 1 July 2026 use transitional DBI arrangements. Check the actual policy, including its insolvency, death, disappearance and any final-order provisions. Older cover does not automatically become Home Warranty.

Check the right claim, its starting date and any shorter time limits with a legal adviser. Domestic building insurance is a separate protection with its own conditions.

Queensland

The Queensland Home Warranty Scheme has separate cover and claim timeframes. Structural cover generally runs for six years and six months from the earliest of the contract, premium payment or work starting. Extensions can apply.

QBCC guidance requires structural claims within three months of noticing the defect. For non-structural cover, the defect must be noticed within six months of substantial completion and claimed within seven months of that completion. Check the policy and current guidance rather than relying on the DLP alone.

Other states and territories

For WA, SA, Tasmania, ACT or NT, confirm the current building-warranty and insurance rules with the local authority. Do not transfer NSW, Victorian or Queensland periods to your project.

Ask which work is covered, when the period starts and when a complaint or claim must be lodged. Also check any value thresholds, exemptions and policy conditions before signing.

Who handles a modular-home defect?

Start with the business responsible under your contract. The cause may involve factory work, transport, foundations, service connections or installation. A sticking door, for example, does not establish the cause by itself.

Ask for an inspection process where the cause is disputed. The customer should have a named reporting contact while the parties investigate. A private responsibility split does not remove applicable legal obligations to the customer.

Read the builder and manufacturer responsibility guide before agreeing the supply and installation scope.

What to do when you find a defect

1. Step 01Make the area safe. For urgent structural, electrical or water hazards, contact the appropriate emergency or licensed professional. Do not delay safety work to take photographs.
2. Step 02Record the issue. Keep photographs, discovery dates, locations and a short description of what has changed.
3. Step 03Gather the documents. Find the contract, handover date, defects list, warranties and insurance certificate.
4. Step 04Notify the builder in writing. Describe the issue, request a response and keep copies of all correspondence.
5. Step 05Get suitable independent advice. A qualified inspector, engineer or other specialist can assess the problem where needed.
6. Step 06Check escalation deadlines. Contact the relevant building authority, insurer or legal adviser if the issue remains unresolved. Do not assume ongoing discussions stop a time limit.

Documents to keep after handover

• 01The signed contract, variations and scope of supply.
• 02Handover records, approvals and relevant inspection documents.
• 03Product warranties, maintenance instructions and insurance certificates.
• 04A dated defects log, photographs, reports and correspondence.

If damage was present at delivery, also read the transport-damage response guide. For construction, transit and completed-home cover, use the separate modular home insurance guide.

Frequently asked questions

What is the difference between a defects liability period and a statutory warranty?

A defects liability period is set by the building contract. Statutory warranties are separate legal protections under the applicable state or territory law. The end of the contractual period does not automatically end every right to a remedy.

How long is a builder liable for modular home defects?

The period depends on the jurisdiction, defect and type of claim. NSW guidance gives six years for major defects and two years for other defects. Insurance claims and legal proceedings can have different deadlines, so check the current rules for your project.

Who is responsible for a modular home defect: the factory or the site builder?

The cause, project contracts and applicable law determine responsibility. Start with your contractual reporting contact. Ask for a documented inspection process if factory work, transport or site work could be involved.

What should I do when I find a defect after moving in?

Make the area safe, record the issue and discovery date, and notify the builder in writing. Keep the contract and insurance documents. Seek suitable independent advice and check complaint, claim and legal deadlines promptly.

Must a Victorian builder be insolvent before I can claim?

Not under every scheme. Eligible contracts signed on or after 1 July 2026 use Home Warranty, which may respond when a builder cannot or will not fix covered work. Earlier contracts use transitional DBI arrangements. Confirm your cover and claim conditions with BPC or the insurer.

The bottom line

Keep the contractual defects period, statutory rights and insurance cover separate. Agree a reporting contact before handover. If a defect appears, document it, notify promptly and check the correct deadline for the claim.

Start your Planning Assessment to organise questions about a proposed project. For an existing defect or dispute, contact the builder, relevant authority or qualified adviser directly.

General information only, not legal, insurance or engineering advice. Requirements depend on your jurisdiction, contract, policy and circumstances. Editorial sources checked: 18 October 2026. This is not approval of a supplier warranty or a specific claim.