When a contractor delivers defective work, you are not without recourse. Canadian law provides property owners with a range of remedies depending on the severity of the defect, the terms of your contract, and how the contractor responds when you raise the issue. The path forward typically involves documenting the deficiency, giving the contractor an opportunity to cure the problem, and if that fails, pursuing compensation through negotiation, demand letters, or civil litigation.
The first step is understanding what constitutes defective work in the eyes of the law. Defective work occurs when the completed job fails to meet the standard promised in the contract, falls below the quality that a reasonably competent contractor in the same trade would deliver, or violates applicable building codes. A contract might specify particular materials, dimensions, or performance standards, and any deviation from those specifications is a breach. Even where the contract is silent on specifics, every construction or renovation contract in Canada carries an implied term that the work will be performed in a good and workmanlike manner. This means the contractor must exercise the skill and care that a competent tradesperson would use, regardless of whether you spelled that out in writing.
Once you identify defective work, documentation becomes essential. Photographs showing the deficiency, written records of communications with the contractor, copies of the original contract and any change orders, and reports from independent inspectors or other tradespeople all form the evidentiary foundation you will need if the dispute escalates. In Alberta, the Limitations Act sets a general limitation period of 2 years from when you knew or ought to have known about the defect to commence a civil action, so timely documentation protects your ability to seek relief later. Other provinces have similar limitation periods, though the precise rules vary, so confirming the applicable deadline in your jurisdiction is prudent.
The most common remedy is requiring the contractor to correct the defective work at their own expense. Your contract may include a warranty clause obligating the contractor to return and fix problems that emerge within a specified period. Even without an express warranty, a contractor who has breached the contract by delivering substandard work generally has a right to cure the defect before you pursue other remedies, provided they can do so in a reasonable time without causing you further harm. You should communicate the deficiency in writing, describe the problem clearly, and give the contractor a reasonable deadline to respond. What counts as reasonable depends on the nature of the work, but a period of 7 to 14 days for a response and a plan is typical for residential projects.
If the contractor refuses to return, disputes that the work is defective, or attempts repairs that fail to resolve the problem, you may pursue damages. Damages aim to put you in the position you would have been in had the contract been performed properly. The primary measure is the cost of correction, meaning the amount you must pay another contractor to fix or redo the work. Courts also allow recovery of consequential damages where they flow naturally from the breach and were reasonably foreseeable at the time the contract was made. For example, if a defective deck causes water intrusion that damages your interior flooring, the cost of repairing the flooring can form part of your claim. You must, however, take reasonable steps to mitigate your losses. Ignoring a small leak until it causes catastrophic damage may limit your recovery.
In some circumstances, the defect is so fundamental that it defeats the entire purpose of the contract. Where this is the case, you may be entitled to rescind the contract rather than simply claim damages. Rescission treats the contract as if it never existed, and both parties must return what they received. If you paid a deposit or progress payments, you are entitled to recover those funds. If the contractor partially completed work that has some value to you, the court may order an accounting to balance what each side owes. Rescission is an equitable remedy, meaning courts have discretion to deny it where the party seeking rescission has acted unfairly or delayed unreasonably.
Provincial builders' lien legislation can also factor into disputes over defective work. In Alberta, the Prompt Payment and Construction Lien Act allows contractors and subcontractors to register liens against property for unpaid amounts, but it also imposes obligations on contractors to complete their work properly. If you withhold payment because the work is defective, you should be prepared to show that the amount withheld is proportionate to the cost of remedying the defect. Withholding an excessive amount relative to the deficiency may expose you to a successful lien claim for the unpaid balance.
Before commencing litigation, many property owners pursue the matter through demand letters. A well-drafted demand letter sets out the deficiency, the remedy you seek, and a deadline for compliance. It also signals to the contractor that you are serious and have documented your position. In some cases, this prompts a settlement without the cost and delay of court. Where the amount in dispute is below the small claims threshold, which at the time of writing, is $100,000 in Alberta's Court of Justice (formerly the Provincial Court Civil Division) and similar amounts in other provinces, you can pursue the matter without hiring a lawyer, though legal advice on strategy remains valuable.
Throughout this process, your contract governs many of the procedural steps. Some contracts include dispute resolution clauses requiring mediation or arbitration before litigation. Others limit liability or require notice within a specific period. Reading your contract carefully and understanding its terms helps you avoid procedural missteps that could weaken your position. If you did not sign a written contract, oral agreements are still enforceable, though proving their terms becomes more difficult, which is why any contemporaneous notes, emails, or text messages become critical evidence.
Ultimately, defective contractor work is a breach of contract, and Canadian law provides property owners with meaningful remedies. Whether your goal is to have the work corrected, recover the cost of hiring someone else, or unwind the deal entirely, the remedy available to you depends on the facts of your situation. Documenting the problem, communicating clearly, and understanding your rights under both the contract and applicable provincial legislation position you to resolve the dispute on favorable terms.
Be sure to engage Binder, and/or Binder University to assist you in framing your claim to maximize your ability to recover damages, as your contractor's insurance requires a carefully crafted allegation to help guide your claim within the wording of typical commercial policies.