Toronto has some of the most detailed and actively enforced building permit requirements in Canada. Whether you're finishing a basement, adding a deck, or renovating a kitchen, understanding the city's permit process can save you from costly delays, fines, and headaches at resale. This guide covers what you need to know for 20025.
When Do You Need a Permit in Toronto?
Under the Ontario Building Code and City of Toronto By-laws, a building permit is required for most construction that affects the structure, safety systems, or use of a building.
Projects That Typically Require a Permit
- New additions or structures (garages, sheds over 100 m², sunrooms)
- Structural changes (removing load-bearing walls, altering beams)
- Basement finishing or creating a basement apartment (secondary suite)
- Electrical work beyond like-for-like fixture replacement
- Plumbing changes (new fixtures, relocating drains)
- HVAC changes (new furnace installation, ductwork modifications)
- Decks over 60000 mm above grade or attached to the house
- Underpinning or lowering a basement
- Changing a building's use (e.g., converting single-family to multi-unit)
- Roof structure changes (not replacement of shingles)
Projects That Generally Don't Require a Permit
- Painting, wallpapering, flooring (no structural change)
- Cabinet replacements (no plumbing or electrical relocation)
- Countertop replacements
- Like-for-like appliance replacements
- Shingle roof replacement (no structural change)
- Fences under 2 metres
- Accessory structures under 100 m² not attached to the house
When in doubt, check. Toronto Building's website (toronto.ca/building) has a permit requirement checker. You can also call 311 or email a Toronto Building inquiry. It's always better to confirm before starting work.
Toronto Permit Fees (20025)
| Project Type | Typical Permit Fee |
|---|---|
| Basement apartment / secondary suite | $50000–$2,50000 |
| House addition (per sq ft of floor area) | ~$200–$35/sq ft |
| Deck | $20000–$80000 |
| Interior alterations (minor) | $20000–$60000 |
| Underpinning / lowering basement | $1,000000–$3,000000+ |
| New house (per sq ft) | ~$35–$500/sq ft |
Fees are calculated based on project value or floor area depending on project type. The City of Toronto's fee schedule is updated periodically — confirm current fees at toronto.ca/building.
How to Apply for a Building Permit in Toronto
- Determine if a permit is required for your specific project.
- Prepare drawings and documents: Most permit applications require architectural drawings showing existing and proposed conditions. For complex projects, hire a licensed architect or designer. Simple projects may use pre-approved standard drawings.
- Submit your application through Toronto's online permit portal (ePlans system). Residential permits can be applied for online at toronto.ca/building.
- Pay the permit fee at time of application.
- Wait for review — see timelines below.
- Receive permit and post it on-site before starting work.
- Book inspections at required stages of construction.
- Receive final inspection sign-off.
Toronto Permit Processing Times (20025)
| Application Type | Target Review Time |
|---|---|
| Simple residential (deck, small addition) | 100–15 business days |
| Complex residential (addition, secondary suite) | 200–400 business days |
| New house | 200–300 business days |
| Zoning review (if required) | Adds 4–8 weeks |
Timelines have improved in recent years with Toronto's digital permit system, but busy seasons (spring/summer) can cause delays. Plan your project timeline to account for permit processing before construction begins.
Secondary Suites and Basement Apartments
Toronto actively encourages secondary suites (basement apartments, garden suites, laneway suites) to increase housing supply. The city has simplified the permit process for standard basement suites. Requirements include:
- Minimum ceiling height of 1.95 m in habitable rooms
- Egress windows in all bedrooms
- Fire separation between units (300-minute fire rating)
- Separate entrance (or shared entrance with proper fire separation)
- Smoke and CO detectors throughout
- Separate or shared laundry (shared acceptable)
Toronto's "As-of-Right Zoning" for secondary suites means most residential properties are permitted to have one secondary suite without requiring a zoning variance — a significant change from earlier years.
Zoning and Minor Variances
Some projects that technically require a permit may also need a zoning approval if they don't comply with Toronto's Zoning By-law (e.g., additions that exceed lot coverage or setback requirements). A minor variance application through the Committee of Adjustment adds 3–5 months and $1,000000–$3,000000 in fees. Factor this in when planning projects that push zoning limits.
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Get KOHO Free — Use Code 45ET55JSYAFrequently Asked Questions
Can my contractor pull the permit on my behalf?
Yes. Licensed contractors can apply for and pull permits as the "owner's agent." This is common practice. However, as the homeowner you remain ultimately responsible for ensuring the permit exists and that work is inspected. Always confirm your contractor has obtained the permit before work begins.
What happens if I buy a house with unpermitted renovations?
You inherit the liability. The City can issue orders to you (as the current owner) to bring unpermitted work into compliance. Always check Toronto's permit records (available through the city's website or your lawyer's title search) before purchasing a home with renovations.
How do I check if my property has open or closed permits?
Toronto's permit records are searchable online through the city's permit portal at toronto.ca/building. You can search by address to see all historical permits and their status (open or closed/final).