Do I Need a Permit for My Renovation in Toronto?
Regulations · 7 min read · 2025-04-05
Understanding when you need a building permit in Toronto can save you from fines, insurance issues, and serious problems when selling. Here is everything you need to know.
Building permits are one of the most confusing aspects of home renovation for GTA homeowners. Many skip permits assuming the process is too complicated — but the risks of unpermitted work far outweigh the cost of doing it properly.
Renovations That Require a Permit
- Removing or modifying load-bearing walls
- Any structural modifications
- Finishing a basement (framing, electrical, plumbing)
- Adding or modifying a bathroom
- Kitchen renovations with plumbing or structural changes
- Electrical work beyond simple fixture replacement
- Adding, enlarging, or relocating windows or doors
- Decks higher than 24 inches above grade
- Adding a secondary suite or basement apartment
- HVAC system changes
Renovations That Typically Do NOT Require a Permit
- Interior painting and wallpapering
- Replacing flooring (no subfloor structural changes)
- Replacing cabinets (no plumbing or electrical changes)
- Replacing countertops
- Replacing fixtures with same-type in same location
- Installing shelving and closet organizers
- Replacing interior doors
- Landscaping and gardening
- Fences under 2 metres in height
How to Apply for a Permit
The City of Toronto accepts applications online through the Toronto Building portal. Simple projects require architectural drawings, a site plan, and a completed application form. Processing takes 2–4 weeks for simple permits and 2–6 months for complex projects requiring zoning review.
Permit Costs in Toronto
- Simple basement finishing: $400–$900
- Bathroom addition: $400–$700
- Kitchen renovation with plumbing/electrical: $500–$950
- Basement apartment: $900–$2,300+
- Deck: $250–$600
- Home addition: $1,700–$5,500+
Risks of Skipping the Permit
- Fines up to $25,000 for individuals under the Ontario Building Code Act.
- Insurance companies may deny claims related to unpermitted work.
- Buyers will ask about permits — unpermitted work can kill a sale or reduce your price significantly.
- The city can order removal of unpermitted work at your expense.
- Safety risks — permits ensure work meets fire safety, structural, electrical, and plumbing standards.
SimplifyReno Makes Permits Easier
Every verified contractor on SimplifyReno understands permit requirements and includes them in their scope when required. You should never wonder whether your renovation needs a permit — your contractor should handle it. Download free on iOS and Android.
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