How to File a Complaint Against a Contractor in Ontario

When a contractor relationship goes wrong — whether through poor workmanship, abandoned projects, contract violations, or outright fraud — Ontario homeowners have several avenues for resolution. Understanding the complaint and dispute resolution process before you need it empowers you to act effectively when problems arise. This guide walks Ottawa homeowners through every step, from informal resolution attempts to formal complaints, legal action, and regulatory bodies that oversee contractor conduct in Ontario.

Step 1: Document Everything

Thorough documentation is the foundation of any complaint.

What to Document

Photograph all work (quality issues, incomplete areas, damage). Save all communications (texts, emails, voicemails). Keep copies of contracts, change orders, and payment records. Note dates of all interactions and milestones. Get a written assessment from an independent contractor or engineer if wor...

Step 2: Attempt Direct Resolution

A formal written complaint to the contractor is the first step.

Written Notice

Send a formal written letter (registered mail) outlining specific issues, referencing contract terms, and requesting specific remedies within a reasonable timeframe (typically 14 to 30 days). Many disputes result from miscommunication and can be resolved directly. Include photos and reference specif...

Step 3: Formal Complaint Channels

If direct resolution fails, multiple formal channels are available.

Complaint Options

Better Business Bureau — file a complaint online. BBB mediates between parties and publicly tracks complaints. Ontario Ministry of Public and Business Service Delivery — handles consumer complaints about businesses. Ontario Home Construction Regulatory Authority (HCRA) — for new home construction co...

Step 4: Legal Options

When complaints do not resolve the issue, legal options exist.

Legal Remedies

Ontario Small Claims Court handles claims up to $35,000. Filing fee is $102 and no lawyer is required, though one is recommended for larger claims. For claims over $35,000, Ontario Superior Court is required. Construction lien — if you owe money to a contractor who performed deficient work, you can ...

Frequently Asked Questions

How do I file a complaint against a contractor in Ontario?

Start with written notice to the contractor. If unresolved, file with BBB, Ontario consumer protection, or relevant regulatory body. For financial disputes, Small Claims Court handles claims up to $35,000.

Can I sue a contractor in small claims court?

Yes. Ontario Small Claims Court handles claims up to $35,000. Filing fee is $102. No lawyer is required but is recommended for larger claims.

What if my contractor abandoned the job?

Document the state of work, send written notice demanding return or refund, file complaints with BBB and consumer protection, and consider Small Claims Court for deposit recovery.

How long do I have to file a complaint?

Limitation periods vary. Construction liens must be filed within 60 days. Small Claims Court claims must be filed within 2 years. File complaints as soon as possible.

What if the contractor did not have a permit?

Report to the City of Ottawa building department. You may need to obtain a permit retroactively and have work inspected. Unpermitted work creates liability for the homeowner.

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