Proudly Canadian
Do You Need a Building Permit for Your Renovation in Canada?
Which projects usually need a permit, and how the process works.
Before opening a wall or finishing the basement, it's worth asking your city whether you need a permit. Getting it wrong can mean stopping work, opening finished walls for inspection, or trouble when you sell.
Work that commonly needs a permit
- Removing or altering load-bearing walls
- Finishing a basement or adding a secondary suite
- Adding or moving plumbing
- Building decks above a certain height
- Additions, garages and major structural work
- Changing windows or doors in structural openings
Work that often doesn't
Painting, flooring, replacing cabinets and like-for-like fixture swaps usually don't need a building permit. Check your city's website, since rules vary.
Electrical and gas permits
Electrical work is often regulated provincially, for example by the Electrical Safety Authority in Ontario. Gas work typically requires a licensed gas fitter and its own permit.
How the process works
You or your contractor submit drawings, pay a fee and schedule inspections at stages like framing, plumbing and final. Ask contractors who will apply for permits before you sign.
Common questions
The homeowner is ultimately responsible, but contractors often apply on your behalf.
Contact your municipality about retroactive permits and inspections.
Timelines vary by city and project complexity.