Laneway suite design in Toronto, from lane check to permit.

A laneway suite sits on a lot that abuts a public lane for at least 3.5 m and is generally accessed from the lane. A garden suite sits in a rear yard with no lane. They live in different chapters of the zoning by-law: Chapter 150.8 and Chapter 150.7. The setbacks differ: 1.0 m off the lane for a laneway suite; for a garden suite, 1.5 m from the rear lot line, or 3.0 m if upstairs back windows (more than 4.0 m up) face a neighbour's yard. A lot can have one or the other, never both.

Up to 8.0 m wide and 10.0 m long, two storeys at most. Height is 4.0 m if the suite is within 7.5 m of the house, or 6.3 m if it is 7.5 m or more away. Its gross floor area must be less than the house's, and the suite's floor area does not count toward the lot's floor space index.

No. With a laneway suite on the lot, Chapter 150.8 removes the parking requirement for the suite and for the dwelling units in the house. Two bicycle parking spaces are required.

Yes. Since July 2025, the City has offered free “Made in Toronto” pre-approved plans for garden and laneway suites. A building permit is still required. Site-specific zoning, fire access and servicing are still reviewed. The set includes a Studio Laneway Suite and a Two-bedroom Laneway Suite. Each comes in heat-pump or forced-air versions and in three fire-access versions: 0 for a walk of up to 45 m from the street, and 1 (sprinklers, strobe, alarms) or 2 (fire-rated construction, strobe, alarms) for up to 90 m. You still file a full permit application with a site plan, grading plan and forms. Any change to the plan, including HVAC or plumbing, ends its pre-approved status. We prepare the site-specific package and handle the application.

Toronto Building's laneway-suite guide lists $18.56 per m² for houses, semis, townhouses and duplexes. Each new unit adds a $56.33 residential unit fee. Both are effective January 1, 2026. The City's Certified Plans Program is a separate route: $9.29 per m² to certify a plan and $15.75 per m² for each permit that uses it. City fees are paid to the City at submission and are listed, not marked up, in your quote.

Emergency access is measured from the street the house faces to the suite entry. Up to 45 m needs no extra fire-safety measures. Up to 90 m is accepted with sprinklers or fire-resistant construction, plus a flashing light outside and smoke alarms. The rule comes from the Ontario Building Code, not the zoning by-law. So it is checked at the building-permit stage and cannot be varied by the Committee of Adjustment. We measure it before we quote.

Between the back of the house and the suite: at least 60% soft landscaping on lots 6.0 m wide or narrower, 85% on wider lots. A walkway up to 1.5 m wide is excluded. Between the suite and the lane: at least 75% soft landscaping, excluding the driveway and walkway (s. 150.8.50.10). The site plan shows every square metre.

Chapter 150.8 lets a garage or shed that was built legally keep its current distances from the lot lines and the house. In the by-law, that generally means it was there legally on May 9, 2013, or had its permit by then. The structure, foundation and fire separation still have to meet the Building Code, so many garages end up rebuilt on the same footprint. We tell you which it is at the zoning review, from the survey and photos.