Home Extension / Rear Addition Permit in Toronto
Getting a home extension / rear addition permit in Toronto means working through Toronto Building - a process with its own local zoning by-law, specific requirements, and timeline expectations. PermitsHub handles every step for Toronto homeowners: compliant permit drawings, zoning review, application submission, and revision management through to approval.
How we handle home extension / rear addition permits in Toronto
- 1
Initial zoning review under Toronto's by-law to confirm the project is permitted as-of-right or identify variance needs
- 2
Home Extension / Rear Addition permit drawings prepared to Toronto Building standards (site plan, floor plans, structural details)
- 3
Application submission via Applications are submitted through Toronto's online CSS permit portal.
- 4
Proactive correspondence and revision management with Toronto Building until the permit is issued
Key considerations for Toronto
Rear yard setback requirements must be maintained - typically 7.5 m in Toronto residential zones.
Lot coverage maximums (typically 33–40% in residential zones) apply to the total of all structures.
Foundation design depends on soil conditions and the scope of the addition.
Connection to the main dwelling's structure must be shown on structural drawings.
Toronto's Express review stream is available for eligible small residential projects.
Home Extension / Rear Addition permits in Toronto - common questions
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