How to Get a Building Permit in Canada

What requires a permit in Canada?

Building permit rules in Canada are set at the municipal level, which means requirements vary by city and province. That said, projects that affect a home's structure, fire safety, or major systems almost always require a permit regardless of where you live.

Projects that consistently require permits across Canadian municipalities include:

• Removing or modifying load-bearing walls
• Adding or significantly altering electrical circuits (new panel, sub-panel, additional circuits)
• Moving or adding plumbing fixtures, drain lines, or water heater replacement
• Installing or altering HVAC systems — new furnace, ductwork rerouting, HRV additions
• Finishing a basement (framing, electrical rough-in, plumbing, insulation, egress windows)
• Building a deck above 600mm (roughly 2 feet) in height, or larger than 10 m²
• Adding a secondary suite or accessory dwelling unit (ADU)
• Constructing an addition — sunroom, garage, second storey
• Any gas line work — connections, relocations, appliance tie-ins

Projects that typically do not require a permit

Cosmetic and like-for-like replacement work rarely triggers a permit requirement. This includes painting interior or exterior surfaces, replacing flooring at the same level, swapping kitchen or bathroom fixtures in their existing locations (same drain, same supply), replacing windows at the same rough opening size (though this varies by municipality), minor landscaping and fencing under 1.8 metres, and appliance replacements where no new circuits or gas connections are added.

When unsure, call your local building department directly — most municipalities have a permit inquiry line staffed by staff who can confirm whether your specific scope needs a permit.

The application process, step by step

Step 1 — Define your scope in writing

Before contacting your municipality, document what you're planning to do in plain language. Note which walls are affected, what trades are involved (electrical, plumbing, structural), and whether you're making any changes to the building's footprint or height. Permit applications are rejected most often for incomplete scope descriptions.

Step 2 — Gather required drawings

Most municipalities require dimensioned floor plans, at minimum. For structural work, a stamped engineer's drawing is often mandatory. Basement finishing typically requires electrical plans, egress window schedules, and insulation specifications. Check your municipality's checklist — many publish these online now.

Step 3 — Submit and pay the application fee

Permit fees in Canada are generally calculated as a percentage of project value — typically 0.5% to 1%. For a $50,000 renovation, expect a permit fee of $250–$500. Some municipalities charge flat fees for smaller projects like decks or basement permits. Major cities like Toronto and Vancouver may charge higher rates and require additional review fees for complex projects.

Step 4 — Wait for approval

Processing times vary considerably by municipality and project complexity. Simple residential permits in smaller cities often process in 1–2 weeks. In large urban centres like Toronto or Calgary, permit approval for complex residential work can take 4–8 weeks. Don't schedule your contractor start date around an optimistic permit timeline — add buffer.

Step 5 — Post the permit and start work

Once approved, the permit card must be posted on-site (usually visible from the street) for the duration of the project. Some municipalities now issue digital permits, but the requirement to display remains.

Step 6 — Schedule inspections

Inspections happen at defined stages — framing rough-in before insulation is installed, electrical rough-in before drywall, plumbing rough-in before closing walls. Your permit documentation will specify the required inspection stages. You're responsible for calling to book each inspection; don't close walls before the rough-in inspection passes.

Permit processing times by province (2026)

Province / Territory	Typical Residential Permit Time	Notes
Ontario (smaller cities)	2–4 weeks	Varies widely; Toronto can be 6–10 weeks for complex projects
British Columbia	3–6 weeks	Vancouver has a dedicated fast-track program for some projects
Alberta	2–5 weeks	Calgary and Edmonton processing times improved after 2024 reforms
Quebec	3–6 weeks	French-language applications required in most municipalities
Atlantic Provinces	1–3 weeks	Smaller municipal departments, generally faster turnaround
Prairies (MB, SK)	2–4 weeks	Rural areas may process faster; Winnipeg closer to 3–5 weeks

What happens if you don't get a required permit?

Skipping a required permit is a significant risk. The consequences that come up consistently across Canadian municipalities include stop-work orders (which can halt an active project until you retroactively permit the work), fines — typically $500–$5,000 for first offences but higher in some jurisdictions — insurance claim denials for damage related to unpermitted work, and mandatory disclosure obligations at resale that can complicate or collapse a sale.

Retroactive permitting is possible in most provinces but expensive. Work already closed in (walls drywalled over uninspected electrical, for example) may need to be opened up for inspection. Some municipalities allow third-party inspectors for retroactive review at additional cost.

Working with a contractor on permits

For most homeowners, the general contractor pulls the relevant permits as part of their scope. This is standard practice and the contractor assumes responsibility for scheduling inspections and ensuring the work passes. However, confirm this explicitly in your contract — who is responsible for obtaining and managing permits should be written out clearly, including who pays permit fees.

If you're doing owner-builder work (managing the project yourself with subcontractors), you'll typically apply as the owner. Most provinces permit this for single-family residential work. Owner-builders are held to the same inspection standards as licensed contractors.

Useful resources

• National Research Council — National Building Code of Canada
• City of Toronto Building Permit Portal
• City of Burnaby — Home Improvement Permits