Defect-Liability Period Disputes
Defect-Liability Period (DLP) Disputes
1. Meaning of Defect-Liability Period (DLP)
A Defect-Liability Period (DLP) is a contractual period following the completion or handover of a construction project during which the contractor remains responsible for correcting defects that appear in the works. The concept is widely used in construction contracts, infrastructure projects, EPC contracts, and public procurement agreements.
The DLP typically begins after practical completion or issuance of a completion certificate and continues for a specified duration (commonly 6–24 months depending on the contract).
During this period:
The contractor must repair defects arising from defective materials, design, or workmanship.
The employer or project owner must notify defects within the DLP.
Retention money or performance security may be withheld to ensure compliance.
Disputes frequently arise regarding:
Whether a defect is covered under DLP
Whether the defect arose from contractor fault
Whether notice of defect was properly given
Whether the DLP has expired
Whether the employer can recover damages instead of repair
These disputes are commonly resolved through arbitration or litigation, particularly in large infrastructure and construction projects.
2. Legal Nature of Defect-Liability Clauses
DLP provisions operate as contractual warranties. Courts generally interpret them as:
A continuing contractual obligation on the contractor.
A remedial right for the employer to require rectification.
A risk-allocation mechanism between contractor and employer.
However, DLP clauses do not necessarily exclude liability after the period if the defect results from latent defects, fraud, or negligence.
3. Common Causes of DLP Disputes
(a) Latent vs Patent Defects
Patent defects: Visible during inspection.
Latent defects: Hidden defects discovered later.
Contractors often argue that latent defects discovered after DLP should not be their responsibility, while employers argue they arise from defective workmanship.
(b) Responsibility for Design vs Workmanship
In design-build contracts, contractors may be liable for design defects.
In traditional contracts, the contractor may argue that defects arise from faulty employer design.
(c) Expiry of the Defect-Liability Period
Disputes occur when defects appear after the DLP has expired.
Courts determine whether:
The defect existed earlier but was discovered later, or
It arose after completion.
(d) Failure to Provide Notice
Many contracts require:
Written notice of defect
Opportunity for contractor to repair
If the employer repairs the defect themselves without notice, recovery of cost may be disputed.
(e) Release of Retention Money
Retention funds are usually released after DLP completion.
Disputes arise where employers withhold retention money alleging unresolved defects.
4. Judicial Principles Governing DLP Disputes
Courts and arbitral tribunals generally apply the following principles:
Contract terms prevail in determining liability.
Contractors are liable only for defects attributable to their work.
Employers must notify defects within contractual timelines.
Latent defects may extend liability beyond the DLP.
Damages may be awarded where the contractor fails to rectify defects.
5. Important Case Laws
1. Hudson’s Building and Engineering Contracts (Judicial Reference)
Although primarily a legal treatise, courts frequently rely on its principles.
The ruling principles recognized that defect liability clauses create an obligation to repair but do not eliminate liability for latent defects discovered later.
2. Pearce & High Ltd v Baxter (1999)
Facts
A contractor completed building works but defects appeared during the DLP. The employer repaired the defects themselves and claimed costs.
Held
The court held:
The contractor must be given an opportunity to rectify defects.
The employer may recover costs only if the contractor fails or refuses to repair.
Principle
DLP clauses require notice and opportunity to cure.
3. East Ham Corporation v Bernard Sunley & Sons Ltd (1966)
Facts
Structural defects were discovered after completion. The contractor argued that liability ended with completion certification.
Held
The court ruled that certification of completion does not extinguish liability for defective work.
Principle
Completion certificates do not protect contractors from defective workmanship claims.
4. MT Højgaard A/S v E.ON Climate & Renewables (2017)
Facts
Defects were found in offshore wind turbine foundations after construction.
Held
The court ruled that the contractor remained liable because the contract required compliance with performance standards, even though the design standard followed was defective.
Principle
Contractors may be liable for performance obligations even if industry standards were followed.
5. P & M Kaye Ltd v Hosier & Dickinson Ltd (1972)
Facts
Defects appeared after project completion, and the employer sought damages.
Held
The court recognized that defect-liability clauses provide a mechanism for repair but do not exclude the employer’s right to damages for breach of contract.
Principle
DLP clauses do not limit remedies unless expressly stated.
6. Corporación Nacional del Cobre de Chile v Sogemin Metals Ltd (1997)
Facts
Disputes arose regarding defective engineering works discovered after project completion.
Held
The court emphasized that liability depends on contractual allocation of risk and technical responsibility.
Principle
Construction liability disputes must be interpreted strictly based on contractual risk allocation.
6. Role of Arbitration in DLP Disputes
Construction contracts often include arbitration clauses. Arbitration is preferred because:
Technical evidence is easier to evaluate
Arbitrators often have engineering expertise
Proceedings are faster than court litigation
Arbitral tribunals typically consider:
Engineering reports
Expert testimony
Site inspection records
Contract specifications
7. Remedies in Defect-Liability Disputes
Courts or tribunals may grant several remedies.
1. Specific Performance
The contractor may be ordered to repair defects.
2. Cost Recovery
Employers may recover repair costs where they fix defects themselves.
3. Damages
Compensation may be awarded for:
Structural failure
Project delays
Additional construction costs
4. Retention Money Adjustment
Retention funds may be:
Released to contractor
Used to offset defect repair costs
8. Practical Risk-Management Measures
To reduce DLP disputes, contracts typically include:
1. Clear defect definitions
Contracts should specify:
Structural defects
Workmanship defects
Design defects
2. Inspection procedures
Periodic inspections during the DLP help identify issues early.
3. Documentation
Employers should maintain:
Site inspection reports
Engineer certificates
Photographic evidence
4. Retention money mechanisms
Retention funds ensure contractors remain motivated to repair defects.
9. Conclusion
Defect-Liability Period disputes are common in construction and infrastructure projects because defects often appear after completion. The legal framework governing these disputes relies primarily on contractual interpretation, engineering evidence, and judicial precedent.
Courts consistently hold that:
Contractors must repair defects attributable to their work during the DLP.
Employers must provide notice and opportunity for rectification.
Completion certificates do not extinguish liability for defective work.
Latent defects may give rise to liability even after the DLP expires.
Therefore, carefully drafted contracts, proper inspection procedures, and effective dispute-resolution mechanisms are essential to minimize conflicts arising during the defect-liability period.
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