Construction deficiencies can affect a project’s value, safety, schedule, and ability to serve its intended purpose. Whether the issue involves incomplete work, defective materials, poor workmanship, or work that does not match the contract, early and careful action can help preserve legal and practical options.
Construction law is largely governed by provincial and territorial legislation, the contract, and the circumstances of the project. The applicable rules may also differ depending on whether the dispute involves an owner, general contractor, subcontractor, consultant, or supplier.
What is a construction deficiency?
A deficiency is generally work or a deliverable that does not comply with the contract, approved plans, specifications, applicable standards, or an agreed scope of work. Examples may include:
- Materials that do not meet the specified quality or performance requirements
- Work that was installed incorrectly or completed below an expected standard
- Incomplete items identified during inspection or closeout
- Water penetration, cracking, settlement, or other performance problems
- Work that does not comply with approved drawings, permits, or applicable building requirements
Start with the contract and project records
The contract is usually the starting point for determining what was promised and how a deficiency must be addressed. Review the scope of work, specifications, drawings, allowances, change documentation, warranty terms, inspection provisions, and dispute-resolution clauses.
Relevant records may include progress photographs, site reports, inspection reports, deficiency lists, meeting minutes, invoices, delivery records, emails, text messages, and notices. Keeping a chronological record can help distinguish the original condition from later repairs or alterations.
Document the deficiency promptly
Before making substantial repairs, document the condition as thoroughly as possible. Photographs and videos should show both the affected area and its location within the project. Record when the problem was discovered, who was notified, and whether the issue is getting worse.
Where the cause or cost is disputed, an appropriately qualified professional may be needed to inspect the work and provide an opinion. Depending on the issue, that professional could be an engineer, architect, building envelope consultant, quantity surveyor, or other specialist. An expert assessment may help address questions of cause, standard of work, scope of repair, and estimated cost.
Give notice and allow a reasonable opportunity to respond
Many construction contracts contain notice requirements for defective work, warranty claims, delays, or other disputes. Follow the contract’s method and timing requirements where possible, and keep proof that the notice was delivered.
A written notice should identify the affected work, explain the apparent problem, refer to relevant contract requirements, and state what response or corrective action is requested. Depending on the circumstances, the responsible party may need a reasonable opportunity to inspect and repair the work before another contractor is engaged.
Consider safety and mitigation
Safety concerns should be addressed immediately. If a deficiency creates a risk of injury or additional property damage, take reasonable steps to protect people and limit the harm. This may include temporary protection, restricting access, preserving evidence, or arranging emergency work.
Mitigation does not necessarily mean accepting the contractor’s position or giving up a claim. Keep records of why urgent steps were necessary, what was done, who performed the work, and the related costs. Avoid unnecessary demolition or permanent repairs that could destroy evidence unless the circumstances require immediate action.
Potential remedies
The appropriate remedy depends on the contract, the seriousness of the deficiency, the available evidence, and the applicable provincial or territorial law. Potential outcomes may include:
- Repair or replacement of deficient work
- A negotiated credit, price adjustment, or payment holdback where permitted
- Compensation for reasonable repair costs or related losses
- Completion of unfinished work by another contractor, subject to the contract and applicable legal requirements
- Resolution through negotiation, mediation, arbitration, adjudication where available, or court proceedings
Not every defect supports every remedy. The parties may disagree about whether the work is deficient, who caused the problem, whether the issue was accepted, or whether the claimed loss is too remote or insufficiently documented.
Watch limitation periods and project deadlines
Construction claims are subject to deadlines that can vary by jurisdiction and claim type. A contract may also contain notice, warranty, certification, or dispute-escalation deadlines. Do not assume that discussions or attempted repairs automatically extend a limitation period.
Before the deadline approaches, obtain advice on the applicable limitation rules and any steps required to preserve the claim. This is particularly important where the deficiency was discovered after substantial completion or where several parties may share responsibility.
When legal advice may help
Legal advice can be useful when the cost of repair is significant, the deficiency affects safety or habitability, several contractors or consultants may be involved, or the parties disagree about responsibility. A lawyer can help interpret the contract, assess notice requirements, organize evidence, and evaluate proportionate next steps.
Because construction law differs across Canada, the right approach depends on the province or territory, the project type, and the wording of the agreements. This article is general information only and is not a substitute for advice about a specific construction deficiency or dispute.
