Defects liability periods explained for strata committees

A Hurstville owners corporation signs off a balcony rectification. Eight months later a small section of the new membrane lifts. The committee panics about who pays to fix it. They should not. That repair sits inside the defects liability period, and it is the contractor's to make good, at no charge to the building. Understanding the defects liability period, and how it sits alongside the statutory warranties in NSW, is one of the most useful things a strata committee can carry into a remedial contract.

The defects liability period is the safety net under the work. A committee that understands it negotiates and manages the contract better.

What a defects liability period actually is

The defects liability period, often shortened to DLP, is a defined window after the work is completed during which the contractor is obliged to return and rectify defects in their work at their own expense, not the building's. It is a standard term in construction contracts. On remedial work it typically runs one to two years from practical completion, sometimes longer depending on the contract.

Its purpose is to cover the defects that only show up once the work is in service, a membrane detail that lets go under its first real weather, a render patch that was always marginal. Within the DLP, the committee reports the defect, and the contractor fixes it. The period is usually backed by a retention, a portion of the contract sum held back and released only at the end of the DLP, which gives the contractor a financial reason to return promptly.

How the DLP differs from the statutory warranty

The DLP is a contractual term, agreed between the owners corporation and the contractor in the contract. Separate from it, and running alongside it, are the statutory warranties under the NSW Home Building Act. For residential building work, the Act implies warranties into the contract by law, and sets statutory warranty periods, six years for major defects and two years for non-major defects, from completion.

These are not the same thing and they do not cancel each other. The DLP is a shorter, contract-based window with a retention behind it and a straightforward make-good obligation. The statutory warranty is a longer, law-based protection that persists after the DLP ends. A membrane failure that appears in year four is past most DLPs but may still be within the six-year major-defect warranty. A committee that knows both exist knows it has recourse well beyond the DLP for genuine major defects.

Why the retention matters

The retention is the mechanism that makes the DLP work in practice. If the full contract sum is paid on completion, the contractor has limited incentive to prioritise a return visit for a minor defect months later. A retention held until the end of the DLP changes that. The contractor returns promptly because the release of the retention depends on the work standing up through the period.

The scope and contract should state the retention and the DLP clearly, how much is held, when it releases, and what triggers a make-good obligation. A scope that is silent on retention and DLP has left out the committee's main lever for getting defects fixed after handover.

What a committee should confirm

Before signing, confirm the DLP length, the retention amount and release trigger, and that the contractor acknowledges the statutory warranty obligations under the Home Building Act. During the period, report any defect promptly and in writing, because the protection depends on raising the defect within the window. At the end of the DLP, inspect before releasing the retention, ideally with the building consultant, so any outstanding defect is caught while the retention is still held.

What to do next

• Confirm the defects liability period and the retention before signing, the length, the amount held, and the release trigger.
• Understand the statutory warranties under the Home Building Act run alongside and beyond the DLP, six years major, two years non-major.
• Report defects in writing and promptly within the period. The protection depends on raising them in the window.
• Inspect at the end of the DLP, with the building consultant, before releasing the retention.

How Supcon handles this

Thomas states the defects liability period and the retention clearly in the scope and contract, alongside an acknowledgement of the statutory warranty obligations under the Home Building Act. Defects raised within the period are made good as the obligation requires, and the end-of-period inspection happens before the retention releases, so nothing outstanding slips through.

The DLP and the statutory warranty are the committee's protection after handover, and both should be on the table before signing. See reading a remedial scope of works for where this sits on the scope checklist, and what a condition report should contain for the document that supports a defect claim.

---

Get a remedial scope. Send through the issue.