Defect & Liability Reporting

2 & 6 Year DLP Reports

Independent reporting that documents a building’s condition and identifies defects while the builder remains liable — prepared by a team that diagnoses as engineers and rectifies as builders.

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What a DLP Report Is

A Defect Liability Period (DLP) report documents the condition of a building and records defects within the relevant liability or statutory warranty period, so that responsibility for rectification can be established while the builder is still liable.

In NSW the term is used in two related senses, and the applicable one should be confirmed for each project:

i
Contractual defects liability period — a period defined in the construction contract (commonly around 12 months from practical completion) during which the contractor returns to rectify notified defects.
ii
Statutory warranty periods — under the Home Building Act 1989, commonly understood as 2 years for general defects and 6 years for major (structural) defects, calculated from completion of the work.

For class 2 (apartment) buildings, separate timeframes may also apply under the Strata Building Bond and Inspections Scheme, which provides for interim and final inspections of building work. The relevant dates and obligations are matters to confirm against the contract, building class and current legislation.

When You Need One

Typical triggers

A DLP report is generally commissioned to preserve rights and inform decisions before a liability period closes.

✓
An owners corporation or owner approaching the end of a 2 year or 6 year period and wanting defects recorded while warranties remain on foot.
✓
Handover between developer, builder and owners corporation.
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Final inspection and building bond considerations for class 2 buildings.
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Before the release of retention, security or a building bond.
✓
To support a defect claim, negotiation or proceedings (subject to separate expert engagement where required).

What’s Typically Included

Scope is confirmed per engagement. A report would ordinarily include:

✓ A site inspection of accessible areas and elements.
✓ A defect register with a photographic record.
✓ Where relevant, an indication of whether items present as major or general in nature.
✓ Reference to contract documents, the NCC and Australian Standards where applicable.
✓ Observations and recommendations for further investigation or rectification.
✓ Suggested prioritisation to assist planning and budgeting.

The categorisation of a defect as major or structural can carry significant commercial consequences. Such classifications are provided as professional opinion based on the information available at the time and may be subject to further investigation.

Our Process

Brief & document reviewScope is set against the contract, plans and any prior reports provided. The review is limited to the documents made available.
Site inspectionAssessment of accessible areas. Where access is restricted, this is noted and further inspection can be recommended.
Defect register & classificationDefects are recorded, photographed and, where relevant, characterised to assist the client and their advisors.
Reporting & recommendationsA clear, defensible report with observations and recommended next steps, written to be relied on.
Rectification & re-inspection (optional)As licensed builders we can scope and deliver rectification, then re-inspect and document close-out.

Why Engineer-Led Matters

Distinguishing a major or structural defect from a general one is an engineering judgement, and it determines which warranty period applies and how much is at stake. Reporting prepared with engineering input tends to carry more weight in negotiation and, where it proceeds, before a tribunal. Because the same team can also rectify, recommendations are framed against what is genuinely buildable rather than theoretical.

Building Condition Reports Engineers Reports Scope of Works Expert Witness Reports