Garden Suites

According to the City of Toronto, a "Garden Suite" is a self-contained home located in an accessory building (usually in the backyard) on your property. Unlike laneway suites, garden suites aren't situated on a public lane. They are detached from the main house.

Yes, converting a garage is often possible! However, it requires careful assessment. The existing structure needs evaluation, and the design must incorporate upgrades to meet current Ontario Building Code standards for habitable spaces. Common upgrades include:

• Adding proper insulation and a year-round heating/cooling system.

• Installing kitchen and bathroom plumbing.

• Providing laundry facilities.

Upgrading electrical service (and potentially gas service).

We can help assess your garage's potential for conversion. Fill out our contact form to get started.

Trees, especially large ones on your property or neighbouring ones, significantly influence garden suite placement and feasibility. Construction must respect tree protection zones to avoid harming them.

• The Toronto building department’s tree declaration form outlines required distances between construction and trees.

• Falling within a tree protection zone often requires additional assessments, specialized construction methods (like pier foundations), potential arborist reports, or even tree removal permits depending on the tree's species, health, and city by-laws.

Navigating tree protection bylaws can be tricky. Ask us how we can help find solutions.

This is a critical early check. The Ontario Building Code mandates clear access paths for firefighters and having accessible fire hydrants located near the property.

• Standard Requirements: Generally, a path of a certain width (typically 1.0m) and a maximum distance from a fire hydrant (typically 45m) are required.

• Potential Flexibility: In some cases, these requirements can be slightly modified if you incorporate additional fire safety measures. For instance:

  • The maximum hydrant distance might increase to 90m with enhanced fire protection.

  • The path width might be reduced to 0.9m if enhanced fire protection is added.

• Enhanced Protection: Options can include installing automated sprinkler systems, exterior strobe lights, and advanced fire warning systems. Unfortunately, if the reduced minimum access requirements cannot be achieved even with these measures provided, a garden suite may not be permissible.

You can also review the City's Garden Suite Firefighter Access Webpage.

If it feels like assessing these requirements isn’t making sense, let Mark H. Smith Designs Inc. help you understand the specific fire access requirements for your property. Call us at 647 609 0333.

Yes. The Ontario Building Code requires a minimum habitable living area (combined sleeping, kitchen, dining, living) of about 146 sq. ft. (13.6m2) for up to two occupants. When you add necessary spaces like a bathroom, laundry, and mechanical area, the functional minimum size is typically around 200 sq. ft. (18.6m2).

Toronto's zoning by-laws specifically cap the footprint (ground floor area) of a garden suite at 60 sq. m. (approximately 645.83 sq. ft.).

• Potential for More Space: This limit applies only to the footprint. You can potentially add significant living space with a second storey and/or a basement. A two-storey garden suite with a basement could theoretically reach a total area of up to 180 sq. m. (approx. 1937 sq. ft.), subject to other zoning rules like height limits and setbacks.

It can be very helpful. Requesting routine disclosure ($74.02 fee as of recent checks) provides historical permit information for your property. This can reveal:

• Past approved construction and permits.

• Sometimes includes old surveys or drawings.

• Helps understand the as-built" status recorded by the City before planning new construction. You can find more information on the City's Request Building Records page.

We can assist in interpreting these records as part of our initial consultation about your upcoming project.

Introduced in 2024, O. Reg 462/24 aims to make building garden suites (and other gentle density housing) easier across Ontario. Key benefits include potentially overriding certain local zoning restrictions that might otherwise hinder a project.

• Key Impact: It often relaxes rules around angular planes and separation distances, potentially making it easier to build two-storey garden suites without costly shoring, especially near property lines or neighbouring structures. The City of Toronto is still integrating this, but the provincial regulation takes precedence where applicable. You can view the regulation details here.

Understanding how O. Reg 462/24 applies to your specific project is crucial – let us guide you.