Accessory Dwelling Unit (ADU) Permit in Toronto
Getting a accessory dwelling unit (adu) 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 accessory dwelling unit (adu) 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
Accessory Dwelling Unit (ADU) 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
Toronto allows one secondary suite inside the home and one detached garden or laneway suite per lot.
ADU feasibility depends on lot size, coverage, setbacks, and lane access availability.
Minor variance applications are sometimes needed when lot constraints prevent full as-of-right compliance.
Construction costs, permit fees, and development charges (where applicable) vary by municipality and unit type.
Toronto's Express review stream is available for eligible small residential projects.
Accessory Dwelling Unit (ADU) permits in Toronto - common questions
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