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 both the express terms of the construction contract and an implied warranty of fitness: the expectation that a contractor will perform work to a competent, professional standard, even if 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 central question is whether the work meets the standard a reasonable, licensed contractor would have delivered. For a deeper analysis of how courts evaluate these failures, see ATAC Law’s guide to understanding contractor negligence in BC.

It is worth distinguishing poor workmanship from cosmetic dissatisfaction. A court will not award damages because a homeowner dislikes the shade of paint or the style of tile grout. The defect must be measurable: it either 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: breach of contract, negligence, and breach of statutory warranty obligations under provincial consumer protection 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 it costs to bring the work up to the agreed standard.

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 four elements: that a duty existed, that the contractor breached it, that the breach caused the damage, and that the damage is quantifiable.

Statutory Protections

Provincial legislation adds further protection. BC’s Limitation Act sets the timeframe for bringing claims, while the Homeowner Protection Act requires residential builders to be licensed and to provide home warranty insurance on new construction. For renovation projects, BC consumer protection rules prohibit deceptive or unconscionable practices by contractors. Each of these statutes gives homeowners additional 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 mandatory first step. 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 outcomes. The CRT’s decisions are binding and enforceable as court orders. ATAC Law has published a step-by-step breakdown of the process in its guide on how to sue a contractor in BC.

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, but construction cases often involve technical evidence, expert reports, and competing interpretations of building code requirements. Hiring a construction lawyer significantly increases the likelihood of a favourable outcome, particularly 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. Cases involving professional negligence by engineers or architects connected to the construction project also proceed here. The BC Civil Resolution Tribunal’s solution explorer can help you determine which forum has jurisdiction over your specific claim value and dispute type.

Time Limits for Filing a Poor Workmanship Claim in BC

BC’s Limitation Act gives homeowners two years from the date they discover poor workmanship to file a lawsuit, with an ultimate backstop of 15 years from the date the defective work was completed.

The two-year clock starts on the “discovery date,” which is the day the homeowner first knew, or reasonably should have known, that the contractor’s work was defective. This is a critical distinction for construction claims because many defects, such as foundation cracks, water infiltration through building envelopes, or failing mechanical systems, do not become visible until months or years after the project is finished.

If the contractor placed a builder’s lien on the property, or if the homeowner needs to file a lien to secure payment for remedial work by a replacement contractor, the BC Builders Lien Act imposes its own strict deadlines. A builder’s lien must be filed within 45 days of the last day work was performed on the project. Missing this deadline eliminates the lien right entirely, regardless of the merit of the underlying claim.

Do not wait. Construction defect claims become harder to prove as time passes. Physical evidence deteriorates, witnesses become harder to locate, and the cost of remedial work increases. If you suspect poor workmanship, consult a construction lawyer immediately to preserve your rights and your evidence.

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 to bring the work up to the standard specified in the contract or required by the building code. This means the cost of hiring a replacement contractor to tear out defective work and redo it 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

When the cost of repair exceeds the increase in property value that the repairs would produce, courts may instead award the difference between the property’s current market value and the value it would have had if the work had been done correctly. 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. A construction litigation team with engineering expertise, like the ATAC Law construction lawyers, can help determine which damage measure applies to your situation.

Consequential and Incidental Losses

Beyond direct repair costs, homeowners can claim consequential damages. These include the cost of temporary housing if the home is uninhabitable during repairs, storage fees for displaced belongings, lost rental income if the property was intended as an investment, and the cost of expert inspections and reports. 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: 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. If the defect is progressive, such as a growing crack or expanding water stain, photograph it at regular intervals to establish the pattern of deterioration over time.

Written Records

Preserve every piece of written communication with the contractor: the original contract, change orders, text messages, emails, invoices, and payment records. If you raised concerns about quality during the project, those complaints are powerful evidence that the contractor was aware of the problem and failed to correct it. Courts give significant weight to contemporaneous written complaints. For guidance on recognizing deliberate deception versus negligent mistakes, ATAC Law’s guide to contractor fraud explains the distinction and its legal significance.

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: that the defect resulted from the contractor’s work, not from pre-existing conditions, normal wear, or homeowner modifications. In BC Supreme Court cases, expert evidence is often the deciding factor.