Do I need a building permit for this work?
Yes for structural work, additions, decks above a certain height, new plumbing or electrical circuits, basement apartments, and anything changing use. No for painting, flooring, cabinets and like-for-like fixture swaps. Ask your municipality, because it is free to ask.
Permits exist to get the work inspected. That is the actual benefit to you.
Generally required: structural changes including removing a load-bearing wall, additions and garages, decks above a specified height, new or relocated plumbing, new electrical circuits and service upgrades, finishing a basement, creating a second unit, and window or door openings that change the structure. Separate electrical permits are handled by the provincial electrical authority rather than the municipality.
Generally not required: paint, flooring, cabinets, countertops, and replacing a fixture in the same place.
Why skipping it is expensive later. Unpermitted work must be disclosed when you sell, and buyers deduct for it or walk. An insurer can deny a claim arising from it. The municipality can issue an order requiring you to open the work up for inspection or remove it. And an unpermitted second unit produces no rental income a lender will recognize.
Call the municipal building department and describe the work. They answer this question for free, and their answer is the one that counts.
What it depends on
- your municipality's by-laws
- the exact scope of work
- whether the work is structural, electrical or plumbing
Next questions
How do I find a contractor I can trust?
Verify three things before price: the licence the work legally requires, a current liability insurance certificate, and a clearance certificate from the workplace insurance board. Then get three written quotes with a defined scope.
Ontario
When is a renovation worth the money?
When you will use it. Very few renovations return their full cost at resale: kitchens and bathrooms come closest, and pools, high-end finishes and garage conversions rarely do. Budget it as consumption, not investment.
Ontario