The defects liability period (DLP) is the period after your home is handed over during which your builder is legally required to return and fix defects that become apparent. In Australia, the DLP is one of the most important — and most misunderstood — protections available to new home buyers.
Most homeowners know the DLP exists. Very few know exactly how long it lasts, what it actually covers, how it differs from their longer statutory warranty rights, or what to do when a builder refuses to honour it. This guide covers all of it.
What is the defects liability period?
The defects liability period is a contractual and — in most states — statutory protection that gives you the right to have defects fixed at no cost during a defined period after practical completion (the formal handover of your home).
It’s called a “liability period” because during this time, the builder retains liability for defects that appear in the completed work. Once the DLP expires, you generally lose the right to have minor defects rectified under this mechanism (though statutory warranties still apply for major defects — more on that below).
The DLP is not the same as your broader statutory warranty. It specifically covers minor defects — cosmetic issues, finishing work, items that don’t affect structural integrity or habitability. Think:
- Paint defects, scuffs, inconsistent colour
- Tile grout issues, lippage, minor chips
- Doors and windows that need adjustment
- Minor plumbing adjustments (dripping taps, running cisterns)
- Missing or incorrectly placed fixings
Major and structural defects are covered by separate, longer statutory warranty periods (see below).
Defects liability period by state
The DLP varies significantly across Australian states and territories. Under most standard residential contracts (HIA and MBA), the minimum is 13 weeks — but state law and individual contracts often extend this.
| State / Territory | Statutory DLP minimum | Notes |
|---|---|---|
| Queensland | 12 months | Under QBCC Act and standard HIA contract |
| New South Wales | Not specified by statute | Typically 13 weeks in HIA contracts; ACL applies |
| Victoria | 12 months | Under Domestic Building Contracts Act |
| Western Australia | Not specified by statute | Typically 12 months under contract |
| South Australia | Not specified by statute | Contract determines DLP length |
| ACT | 12 months | Under Construction Occupations (Licensing) Act |
| Tasmania | Not specified by statute | Contract determines DLP length |
Always check your specific building contract — it may provide longer periods than the statutory minimum.
In Queensland, the QBCC Act provides the strongest statutory DLP at 12 months, meaning builders cannot contract out of this period regardless of what the contract says.
In New South Wales, the Home Building Act 1989 doesn’t specify a minimum DLP. Your contract is the primary document. Standard HIA contracts provide 13 weeks, which is the minimum industry practice. However, Australian Consumer Law (ACL) guarantees still apply — services must be rendered with due care and skill.
How the DLP differs from statutory warranty periods
This is where many homeowners get confused. The DLP and statutory warranties are two different things:
| Defects liability period (DLP) | Statutory warranty | |
|---|---|---|
| Covers | Minor defects | Major and structural defects |
| Duration | 13 weeks to 12 months | 6–10 years depending on state |
| Starts from | Practical completion / handover | Practical completion / handover |
| What triggers it | Any defect becoming apparent | Discovery of major or structural defect |
| How to use | Written defects list to builder | Written notice, then authority / tribunal |
The key point: the DLP for minor defects expires. Statutory warranties for major defects do not expire until the end of their statutory period (typically 6 years in NSW and WA, 10 years in QLD and VIC for structural defects).
If you discover a waterproofing failure two years after handover, you’re well outside the DLP but still within your statutory warranty period. Waterproofing is classified as a major defect in all Australian states.
Statutory warranty periods by state
For reference alongside the DLP:
| State | Structural / major defects | Non-structural major defects |
|---|---|---|
| Queensland | 10 years | 6 years |
| New South Wales | 6 years | 2 years |
| Victoria | 10 years | 2 years |
| Western Australia | 6 years | 6 years |
| South Australia | No specific period — ACL applies | – |
These periods run from the date of practical completion, not from when you discover the defect.
How to use your DLP effectively
Step 1: Start your defects log on handover day
Don’t wait. The moment you take possession of your home, begin walking through it systematically. Photograph every issue, describe it specifically, and record the date. Checka is designed for exactly this — log issues in real time as you walk through the property, assign severity, and build a complete timestamped record.
Step 2: Continue inspecting for the first few months
Many defects don’t appear immediately. Seasonal movement causes cracks to open. Wet-area waterproofing failures often become visible only after sustained use. Tile adhesive failures can take weeks to manifest as hollow spots.
Set a calendar reminder for 3, 6, and 9 months into your DLP. Walk through the home systematically each time and log any new issues.
Step 3: Submit a formal defects list before the DLP expires
Before your DLP expires, compile all outstanding defects into a formal written list. This is sometimes called a “defect schedule” or “punch list.” Send it to your builder in writing (email is fine — it’s dated and provable).
Your formal defects list should include:
- A specific description of each defect (location, size, nature)
- The date you first noticed it
- Photographs referenced or attached
- A request for the builder to respond within 14 days with a rectification schedule
Under most building contracts and at common law, a builder who receives a formal defects list during the DLP is obligated to rectify those items within a reasonable time.
Step 4: Follow up if there’s no response
If the builder doesn’t respond within your stated timeframe:
- Send a follow-up email referencing the original notice
- State that you will escalate to your state building authority if no response is received within a further 7 days
- Attach your Checka defects report as supporting documentation
Step 5: Contact your state building authority
If the builder ignores your formal notices, contact the relevant authority:
- QLD: QBCC — can issue a formal direction to rectify
- NSW: NSW Fair Trading — mediation and dispute resolution
- VIC: DBDRV — free dispute resolution service
- WA: Building Commission WA
- SA: Consumer and Business Services
In Queensland, the QBCC has strong enforcement powers and can compel a builder to fix defects during the warranty period. This is why having documentation from Checka matters — inspectors need specific, dated evidence.
What counts as a defect during the DLP?
The general legal standard is: work that does not meet the standard a reasonable person would expect, or that does not comply with the building contract, Australian Standards, or the National Construction Code (NCC).
Examples of items typically covered by DLP:
- Paint finish with visible brush marks, roller texture inconsistency, or unblended touch-ups
- Tile lippage (adjacent tiles not flush) — tolerance under AS 3958 is typically 1mm for rectified tiles
- Doors that bind, stick, or fail to latch
- Missing items called for in the contract (light fittings, handles, weatherstripping)
- Grout gaps, inconsistent grout colour, or incomplete grouting
- Minor cracks in plasterboard or render (hairline cracking is common but should be addressed)
Examples of items typically NOT covered by DLP (covered by statutory warranty instead):
- Waterproofing failures — major defect, 6-10 years
- Structural cracking — major defect, 6-10 years
- Non-compliant plumbing or electrical — major defect
Common mistakes homeowners make during the DLP
Reporting issues verbally and not following up in writing. A phone call with your builder is not enforceable. Always confirm in writing.
Waiting until the DLP is almost expired to compile issues. The DLP runs from handover. If your DLP is 12 months, you should be submitting your formal defects list around month 10 or 11 — not on month 12 when it’s too late to get rectification done before expiry.
Allowing the builder to fix defects without documenting what was fixed. If the builder fixes a defect and the fix later fails, you need a record of what was originally wrong and what was done to fix it.
Not having the builder provide written confirmation of the DLP end date. Some disputes centre on when practical completion occurred and therefore when the DLP started. Make sure you have written confirmation of your practical completion date.
Using Checka during your DLP
Checka is designed specifically for this process. During your DLP:
- Log every defect with a photograph, description, and location tag from the day you move in
- Track the status of each item (open, builder notified, in progress, resolved)
- Generate a professional defects report at any point — formatted for your builder, certifier, or state building authority
- Export your report before the DLP expires as a formal record of outstanding items
A Checka report showing dated photographs of each defect, alongside written communication to the builder, gives you the strongest possible position if the matter escalates to an authority or tribunal.
Key Takeaways
- The defects liability period (DLP) typically runs 13 weeks to 12 months after handover, depending on your state and contract — QLD and VIC provide 12 months by statute
- The DLP covers minor defects — paint, tiles, doors, minor plumbing; major and structural defects are covered by separate statutory warranties of 6–10 years
- Submit a formal written defects list to your builder before the DLP expires — this is your trigger document
- Verbal complaints do not count — all defect notifications must be in writing to be enforceable
- If your builder refuses to act, your state building authority (QBCC, NSW Fair Trading, DBDRV) can compel rectification for free
- Keep dated photographs of every defect from day one — this is your evidence if the matter goes to a tribunal
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