Building Permit & Code Compliance
Building permits are municipal, but the obligation is universal: structural work, additions, most basement apartments, decks beyond thresholds, and structural or use changes need a permit everywhere in Canada. Unpermitted work is the single most common compliance problem in Canadian real estate — and municipalities have well-worn processes for fixing it that most owners simply never learn.
Legalizing existing work
The typical path: a designer or engineer documents the as-built condition, drawings are submitted for a permit “as constructed,” the municipality inspects (sometimes requiring targeted openings to view structure), deficiencies are corrected, and the permit closes. For basement apartments, this merges with second-unit registration where your municipality runs one. The outcome is a closed permit that ends the issue for every future sale.
Orders to comply and stop-work orders
If the municipality found the work first — a complaint, an inspector driving past — you hold an order with a deadline. Ignoring orders escalates to prosecution and, in serious cases, remediation at your expense. Responding with a permit application and a schedule almost always converts an adversarial file into a routine one; inspectors want compliance, not court.
Open permits and title issues
Permits left open by past contractors appear on municipal compliance letters lawyers order during transactions, and can hold up closings. Closing them requires final inspections against the code edition of the original permit — often simpler than owners expect. We chase the municipal file and get it closed.
How the process works
- Tell us what was built, when, and whether the municipality is already involved.
- A designer/engineer documents as-built conditions and prepares drawings.
- The permit application is filed and municipal review managed.
- Inspections are scheduled; corrections arranged with local trades.
- The permit closes and you receive the municipal record.
Who regulates this in each province
| Province / Territory | Governing code | Key authority |
|---|---|---|
| Ontario | Ontario Building Code (O. Reg. 332/12) | the municipal building department |
| Quebec | Quebec Construction Code (Chapter I, Building) | the municipal building department |
| British Columbia | BC Building Code | the municipal building department |
| Alberta | National Building Code (Alberta Edition) | the municipal building department |
| Manitoba | Manitoba Building Code | the municipal building department |
| Saskatchewan | National Building Code as adopted under The Construction Codes Act | the municipal building department |
| Nova Scotia | Nova Scotia Building Code Regulations | the municipal building department |
| New Brunswick | National Building Code as adopted under the Building Code Administration Act | the municipal building department |
| Newfoundland and Labrador | National Building Code as adopted by municipalities | the municipal building department |
| Prince Edward Island | National Building Code as adopted under the Building Codes Act | the municipal building department |
| Yukon | National Building Code as adopted by Yukon | the municipal building department |
| Northwest Territories | National Building Code as adopted in the NWT | the municipal building department |
| Nunavut | National Building Code as adopted in Nunavut | the municipal building department |
Frequently asked questions
The renovation was done 15 years ago. Does anyone care?
Time does not legalize construction — the issue surfaces whenever a buyer’s lawyer orders a compliance letter or an insurer investigates a claim. Legalizing on your own timeline is dramatically better than under a purchaser’s deadline.
Will the city make me tear it out?
Rarely. Removal orders target work that cannot meet code — insufficient ceiling heights, unsafe structure. The overwhelming majority of legalizations end in corrections, not demolition.
What does legalization cost?
Drawings and permit fees typically run $2,000–$8,000 for residential projects, plus whatever corrections inspections require. Complex structural work needs an engineer, which adds to that.
Do I need a permit for my deck/shed/fence?
Thresholds vary by municipality — commonly decks over 600 mm high and sheds over 10–15 m² need permits; fences usually only need by-law compliance. We confirm your municipality’s numbers before you build.
Building Permit & Code Compliance by city
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Learn more →Get a fast, free compliance quote
Tell us what you need for building permit & code compliance — we reply within one business day with the applicable requirements and a clear price.