ADU Plans in North York - Design, Permits, Construction

North York's 1950s-60s bungalow belt around Willowdale and Don Mills gives us the deepest rear yards inside Toronto's boundary - 120 ft lots where a 700 sq ft garden suite still leaves usable green space. Almost none of these lots have a laneway, which is why nearly every North York project we build is a garden suite rather than a laneway house. Falls under the City of Toronto garden suite by-law; North York's post-war lots rarely have laneways, so garden suites (not laneway suites) are the usual permitted form.

Deep post-war bungalow lots, commonly 50 ft × 120 ft, with rear yards large enough for a detached garden suite plus the required 1.5 m separation. North York sees 133 cm of snow and -4.2°C winter averages.

Plans are only useful if they are permit-ready for the authority that will actually review them, so an North York set is drawn to City of Toronto submission standards rather than to a generic template. The set covers site plan, floor plans, elevations, sections, the 1.2 m foundation detail, the roof framing sized for 133 cm of snow, and the fire-separation and egress details the plans examiner checks first. Stock plans bought online almost always fail the North York review on setbacks and lot coverage, because those are parcel-specific and no catalogue drawing can know your lot.