For many project participants, including Principals, Head Contractors and Subcontractors, the end of the Defects Liability Period under a construction contract can feel like the end of the project’s risk profile.
The works have been completed, final accounts have been reconciled, the project team has moved on, and any apparent defects have been addressed. However, the expiry of the Defects Liability Period does not necessarily bring legal exposure to an end.
A latent defect may remain hidden for years before causing any obvious problem. When it eventually emerges, parties often focus on responsibility, causation and rectification. But there’s a more fundamental question:
Is it still possible to bring a claim?
The answer is rarely straightforward. In construction disputes involving latent defects, limitation issues can be just as important as the technical merits of the claim. A claim may fail, not because the defect is unproven, but because the applicable limitation period has expired.
The answer may differ depending on whether the claim is brought in contract or negligence. In some circumstances, a contractual claim may face significant limitation difficulties while a negligence claim arising from the same defect remains available.
Latent defects create unique risks
Unlike patent defects, which are apparent upon reasonable inspection, latent defects remain concealed and may not manifest until years after completion. Examples commonly encountered across the construction industry include:
- waterproofing failures concealed behind finishes;
- structural deficiencies that emerge only under long-term loading conditions;
- design coordination issues affecting building services;
- inadequately installed interfaces between different trades; and
- concealed workmanship defects that become apparent only after deterioration or damage occurs.
In each case, the defect may have existed from the day the relevant work was performed, although the resulting loss did not arise until much later. The distinction between the existence of a defect and the occurrence of loss is often central to the limitation analysis.
Why timing matters
Limitation periods impose statutory deadlines for commencing proceedings. Once the applicable period expires, a party may lose the ability to pursue an otherwise valid claim.
In construction disputes, there can be a significant gap between:
- when the work was performed;
- when the defect first existed;
- when the defect became discoverable; and
- when measurable loss was suffered.
The legal significance of each date depends on the cause of action being advanced. A single defect may therefore give rise to multiple causes of action, each with a different accrual date and limitation analysis.
Claims for breach of contract
A claim for breach of contract generally arises when the relevant contractual obligation is breached, and the time available to commence proceedings will depend on the applicable limitation regime. In Queensland, for example, the limitation period for a claim based on a simple contract is generally six years from the date the cause of action accrues.
In a construction context, a breach may occur when:
- defective work is performed;
- non-compliant materials are installed;
- a design fails to satisfy contractual requirements;
- specified inspections are not undertaken; or
- contractual procedures are not followed.
The important point is that a contractual breach can occur even if nobody knows about it.
Consider a simple example. A waterproofing system is installed in 2018 but does not comply with the project specification. The building performs without issue for several years. In 2026, water penetration occurs, damaging internal finishes and requiring substantial investigation and rectification.
From a practical perspective, many participants would regard 2026 as the point at which the problem emerged. From a contractual perspective, however, the relevant breach likely occurred years earlier, when the defective waterproofing was installed.
As a result, a contractual claim may face significant limitation difficulties well before the defect becomes apparent. This is one of the challenges posed by latent defects: a defect may remain hidden for years while the contractual limitation period continues to run.
Claims for negligence
Negligence claims operate differently. To establish negligence, a claimant must generally demonstrate:
- a duty of care;
- breach of that duty;
- causation; and
- loss.
Unlike a contractual claim, the mere existence of defective work does not necessarily complete a cause of action in negligence. All elements must be present, including measurable damage or loss.
Returning to the waterproofing example, the allegedly negligent work may have occurred in 2018, but measurable loss may not be sustained until water ingress causes damage, investigations become necessary, temporary protection measures are implemented or rectification costs are incurred.
This distinction is important in latent defect disputes because the existence of a defect and the occurrence of damage may be separated by many years. A defect may exist from the day the work is performed, yet remain dormant until a later event causes physical damage, financial loss or both.
In those circumstances, the analysis often focuses on identifying when actual loss was first sustained. That exercise can be highly factual and may require expert evidence about the defect, the onset of damage and the causal connection between the alleged negligence and the loss claimed.
As a result, a negligence claim may remain available even where a contractual claim arising from the same defect faces significant limitation difficulties or can no longer be pursued. However, negligence is not an automatic alternative to an expired contractual claim.
The claimant must still establish that the defendant owed the relevant duty of care and that the alleged breach caused recoverable loss. The availability and scope of that duty will depend on the circumstances, including the parties’ contractual arrangements and the nature of the loss claimed.
Why does this matter?
For construction participants, the distinction is more than a legal technicality. It can determine whether losses can be recovered at all and whether liability can be passed down the contractual chain.
For example, a Principal discovering a latent defect years after completion may seek to recover its losses from a Head Contractor. The Head Contractor may, in turn, seek recovery from consultants, suppliers or Subcontractors responsible for the relevant work.
The viability of each claim may depend on the cause of action relied upon and when it accrued.
Parties that assume their exposure ended at practical completion or upon expiry of the Defects Liability Period may therefore underestimate their residual risk. Equally, a party facing a defect claim should not assume that the age of the project, by itself, provides a complete limitation defence.
Documentation often determines the outcome
When latent defects emerge years after completion, parties are frequently required to reconstruct events after relevant personnel have left the project and records have been archived or lost.
Questions that seemed straightforward at completion can suddenly become critical:
- What work was actually installed?
- What design assumptions were adopted?
- Were departures approved?
- Who accepted responsibility for design coordination?
- What inspections occurred?
- When did the first signs of damage emerge?
- What costs were incurred, when and why?
The ability to answer these questions through contemporaneous records often determines the strength of a party’s position on liability, causation and limitation.
In many latent defect disputes, the most important evidence is not created after the defect emerges. It is created during procurement, design development, construction and project close-out.
Key takeaways
A latent defect does not necessarily become legally relevant when it is discovered. Depending on the cause of action relied upon, the applicable limitation period may begin to run at different points in time.
For breach of contract claims, time will generally run from the date of breach, which may be when the defective work was performed, even if no damage was immediately apparent.
Negligence claims operate differently. Because loss is an essential element of the cause of action, a negligence claim may not accrue until measurable damage or loss is first sustained. In a latent defect dispute, that may occur years after the underlying work was carried out.
The practical lesson is this: the expiry of the Defects Liability Period does not necessarily mark the end of legal exposure. A latent defect may give rise to both contractual and negligence claims, and the timing of those claims may be materially different.
Effective risk management starts well before a dispute arises. Parties should preserve records capable of proving timing and responsibility, engage experts early to assess causation and loss, and notify insurers promptly when a credible circumstance arises. These steps can materially strengthen a recovery or defence strategy.
If you are dealing with a latent defect issue or would like to review your current processes, early intervention can materially affect both the risk and outcome.
