Do I Need a Permit for a Garden Suite?

A garden suite is a self-contained dwelling unit located on the same lot as a principal home, and where the use is permitted it requires building-permit review before construction. Feasibility should be checked before detailed design because zoning, lot layout, access, trees, servicing and site conditions can determine whether the suite can fit.

Direct answer: Yes—if a garden suite is permitted on the property, the new dwelling still needs a building permit and a coordinated set of drawings. The first step is usually a property and zoning review: confirm the proposed location, setbacks, height, lot coverage or landscaping requirements, pedestrian and emergency access, tree impacts and servicing. The permit package can then address the suite itself with a site plan, floor plans, elevations, sections, construction details and any required structural or building-system information. Municipal rules vary, so the property should be checked before the floor plan is treated as final.

Property eligibility

The lot and municipality have to allow the proposed additional unit.

Site plan

Shows the main house, proposed suite, setbacks and relevant site information.

Permit drawings

Floor plans, elevations, sections and construction details describe the suite.

Servicing and access

Water, sanitary, storm, emergency access and other site requirements can affect feasibility.

Property and municipality still matter

This answer is a practical starting point, not a permit decision for every property. Zoning, existing conditions, applicable law, project size and the municipality’s current application guide can change what is required.

Related 828 Design service

Garden Suite Permit Drawings →

Official referenceCity of Toronto — New Garden Suite ↗

Reviewed against current municipal permit guidance: August 2026. Requirements are confirmed for the actual property and project before design/submission.

Need drawings for this project?

Send the property address, what you want to build and any survey, existing drawings, photos or municipal comments you already have.

Request a Permit Quote →View Garden Suite Permit Drawings →