Underpinning Permit in Toronto
Getting a underpinning 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 underpinning 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
Underpinning 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
Underpinning lowers the basement floor by excavating and extending the foundation - it always requires a permit.
Engineered drawings from a licensed structural engineer are required for all underpinning applications.
Neighbouring property notifications and, in some cases, party wall agreements are required.
Staged underpinning sequences and shoring plans must be shown to protect the structure during work.
Toronto's Express review stream is available for eligible small residential projects.
Underpinning permits in Toronto - common questions
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