Suing a Contractor for Poor Workmanship in Canada

What Counts as Poor Workmanship Under BC Construction Law

Poor workmanship is construction work that fails to meet the quality standards defined in the contract, the BC Building Code, or the implied standard of reasonable care that Canadian courts apply to all contractors.

The legal definition of poor workmanship covers a wide range of construction defects. Faulty installation, the use of substandard materials, incomplete work, and work that does not comply with municipal building permits all qualify. BC courts assess workmanship against the express terms of the construction contract and against the terms the law implies. Those implied terms require reasonable skill and care in the work and materials fit for their purpose, even where the contract does not spell out every detail.

Common examples of poor workmanship include improperly graded foundations, leaking building envelopes, electrical work that violates code requirements, plumbing that fails within months of completion, and structural framing that does not meet engineering specifications. In each case, the court compares the finished work with the standard a reasonable, licensed contractor would have delivered. ATAC LAW’s guide to contractor breach of contract in BC explains how courts separate a claim on the contract from a claim in negligence.

Poor workmanship is distinct from cosmetic dissatisfaction. A court will not award damages because a homeowner dislikes the shade of paint or the style of tile grout. The Civil Resolution Tribunal applies the same standard. The defect must be measurable, meaning the work violates a code, breaches a contract term, or falls below the objective standard of competence expected in the construction industry.

Legal Grounds for Suing a Contractor for Bad Work in Canada

Canadian homeowners can sue a contractor for poor workmanship on three primary legal grounds, being breach of contract, negligence, and breach of statutory obligations under provincial legislation.

Breach of Contract

The most direct ground is breach of contract. If the construction contract specifies materials, timelines, or quality standards and the contractor fails to deliver, the homeowner has a claim for breach. Written contracts provide the strongest foundation, but oral agreements are also enforceable in BC. The court will examine what was promised, what was delivered, and what bringing the work up to the agreed standard will cost.

Negligence

A contractor owes a duty of care to the homeowner. When the contractor’s work falls below the standard of a reasonably competent professional and causes damage, the homeowner can bring a negligence claim. This ground applies even when there is no written contract, because the duty of care exists independently under common law. The homeowner must prove a duty of care and a breach of the standard of care. The homeowner must also prove quantifiable damage caused by that breach.

Liability for a Subcontractor’s Work

Most residential projects are built by subcontracted trades. The defective work is often done by a framer, roofer or electrician who never signed anything with the homeowner. The claim in contract still runs against the general contractor. A general contractor that agrees to deliver the finished work answers to the owner for all of that work, including the parts handed to subcontractors. Delegating a task to a trade does not transfer that contractual responsibility.

Negligence follows a different rule. In 671122 Ontario Ltd. v. Sagaz Industries Canada Inc., 2001 SCC 59, the Supreme Court of Canada held that vicarious liability is generally not imposed for the acts of an independent contractor. A homeowner may sue the subcontractor directly in negligence, but recovery of the bare cost of repairing a defect is limited. The main exception is Winnipeg Condominium Corporation No. 36 v. Bird Construction Co., [1995] 1 S.C.R. 85. There the Court held that a builder may be liable to a later owner with no contract for the cost of repairing defects that pose a real and substantial danger to the building’s occupants.

Several parties often share responsibility for one defect. The contractor, a subcontractor and a design professional may each have contributed to the loss. In that case, the Negligence Act requires the court to determine the degree to which each was at fault. Parties found at fault are jointly and severally liable to the homeowner, so the full judgment can be collected from any of them.

Statutory Protections

Provincial legislation adds further protection. The Homeowner Protection Act requires residential builders to be licensed and to provide home warranty insurance on new construction. For renovation work, the Business Practices and Consumer Protection Act prohibits deceptive and unconscionable acts by suppliers in consumer transactions. Each of these statutes gives homeowners grounds to recover losses beyond what the contract alone provides.

Small Claims Court vs. BC Supreme Court for Construction Disputes

The right court for your construction dispute depends on the dollar value of your claim. The Civil Resolution Tribunal handles disputes up to $5,000, BC Small Claims Court covers claims between $5,001 and $35,000, and BC Supreme Court handles claims above $35,000.

Civil Resolution Tribunal (Up to $5,000)

For smaller construction defect claims, the Civil Resolution Tribunal is the starting point. The CRT operates primarily online, which reduces costs and speeds up resolution. Filing fees are low, and the process does not require a lawyer, though legal advice before filing improves the quality of the claim. A CRT order can be filed with the court and enforced as a court order. That enforcement is subject to the objection rights the Civil Resolution Tribunal Act gives parties in small claims disputes.

BC Small Claims Court ($5,001 to $35,000)

Construction disputes involving repair costs between $5,001 and $35,000 proceed through BC Small Claims Court. This court is designed to be accessible without a lawyer. Construction cases often involve technical evidence, expert reports, and competing interpretations of building code requirements. Legal representation carries the most weight when the contractor disputes the scope of the defects or brings a counterclaim for unpaid invoices.

BC Supreme Court (Above $35,000)

Major construction defect claims, particularly those involving structural failures, building envelope damage, or multi-trade projects gone wrong, typically exceed $35,000 and must be filed in BC Supreme Court. Supreme Court proceedings are more formal, require full discovery, and often involve expert witnesses from both sides. The costs are higher, but so are the potential recoveries. Claims against engineers or architects for professional negligence on the same project are commonly brought in the same Supreme Court action. The BC Civil Resolution Tribunal’s solution explorer can help you identify the tribunal or court that hears your specific claim value and dispute type.

Time Limits for Filing a Poor Workmanship Claim in BC

BC’s Limitation Act generally gives homeowners two years from the day a claim is discovered to start a lawsuit, with an ultimate limit of 15 years from the day of the act or omission on which the claim is based.

The two year clock starts on the discovery date. That is the day the homeowner first knew, or reasonably ought to have known, that the defective work had caused a loss and that the contractor was responsible. This rule matters for construction claims, because many defects appear months or years after the project is finished. Foundation cracks, water infiltration through a building envelope and failing mechanical systems are common examples.

Builders’ liens run on a separate and much shorter clock. An unpaid contractor or subcontractor has 45 days to file a claim of lien under the Builders Lien Act. The same deadline applies to a replacement contractor hired to correct defective work. The period runs from the issue of a certificate of completion or, where none is issued, from the completion, abandonment or termination of the head contract. A lien filed after that deadline is lost, regardless of the merit of the underlying claim.

Delay weakens a construction defect claim. Physical evidence deteriorates, witnesses become harder to locate, and the cost of remedial work increases. A homeowner who suspects poor workmanship protects both the limitation position and the evidence by speaking with a construction lawyer before remedial work begins. The discovery rules and their exceptions appear in sections 8 to 12 of the Limitation Act.

What Damages Can You Recover from a Contractor

Homeowners who prove poor workmanship can recover the cost of repairs, the diminished value of the property, consequential losses such as temporary housing expenses, and in some cases, damages for the loss of use of their home.

Cost of Repair or Completion

The primary measure of damages in a poor workmanship case is the cost of correction. That cost is measured against the standard in the contract or the building code. This means the cost of hiring a replacement contractor to tear out defective work and redo the work properly. Courts in BC regularly award the full cost of remediation when the homeowner provides a detailed repair estimate from a qualified contractor or engineer.

Diminution in Property Value

Repair costs sometimes exceed the increase in property value that the repairs would produce. In that situation, courts may instead award the difference between the current market value and the value the property would have had with proper work. This measure is more common in cases involving older properties or projects where the original scope was modest relative to the home’s overall value. ATAC LAW construction lawyers, who hold engineering qualifications as well as legal ones, can assess which measure of damages fits a particular property.

Consequential and Incidental Losses

Beyond direct repair costs, homeowners can claim consequential damages. These include temporary housing while the home is uninhabitable, storage fees for displaced belongings, and the cost of expert inspections and reports. Lost rental income can also be claimed where the property was held as an investment. Courts assess consequential damages on a case by case basis, requiring proof that the losses were foreseeable and flowed naturally from the defective work. You must also demonstrate that you took reasonable steps to minimize your losses after discovering the defects.

How to Document and Prove Poor Workmanship

Winning a poor workmanship case requires evidence that connects the defect to the contractor’s work, including dated photographs, the original construction contract, all written communications, independent inspection reports, and detailed repair estimates from qualified professionals. The Small Claims BC resource centre provides checklists for organizing this evidence before filing.

Photographic and Video Evidence

Document every defect with timestamped photographs and video before any remedial work begins. Capture wide angle shots that establish the location within the structure, followed by close ups of the specific defect. Include a measuring tape or ruler in close up shots to establish scale. Some defects are progressive, such as a growing crack or an expanding water stain. Photograph those defects at regular intervals to record the pattern of deterioration.

Written Records

Preserve every piece of written communication with the contractor, including the original contract, change orders, text messages, emails, invoices, and payment records. Complaints about quality raised during the project carry particular weight. They show that the contractor knew of the problem and failed to correct the work. Courts give significant weight to written complaints made at the time.

Expert Reports

An independent inspection report from a licensed engineer or building inspector transforms a subjective complaint into an objective, court ready claim. The expert measures the defect against the applicable building code, the contract specifications, and the industry standard of care. The report quantifies the cost of remediation and establishes causation. Causation means the defect resulted from the contractor’s work rather than from pre existing conditions, normal wear, or homeowner modifications. In BC Supreme Court cases, expert evidence is often the deciding factor.