By Savino Construction · Published September 12, 2026 · No prices in the guides; every number comes from a site walk. Anything in [brackets] is confirmed before launch.
The lane
The lot has to abut a public laneway, not a private driveway or a shared right of way. Most of the lots that qualify are in the old city and East York, where the street grid was laid out with rear lanes. If the lot has no lane, the garden suite rules apply instead, and the suite is reached from the side of the main house.
Fire access
The rule that most often decides a lot is fire access. A fire hose has to reach the laneway suite from a street the fire truck can park on, along a path with a minimum clear width, and within a maximum travel distance set by the by-law. A long lot with a narrow side passage can fail that test. Where the distance is over the limit, sprinklers or other measures may be an option. The lot check answers this first, because nothing else matters if the hose cannot reach.
Setbacks, height and depth
The by-law sets the envelope the suite has to sit inside.
- A setback from the lane, and from the side lot lines, that varies with lot width.
- A minimum separation between the main house and the suite, which sets how deep the lot has to be for a suite of any size.
- A height limit, with a lower limit near the lot lines, which decides whether two storeys fit.
- Limits on second-floor windows and balconies facing the neighbours.
- Soft landscaping requirements for the yard that is left.
Trees, services and the garage
A protected tree on the lot, or a neighbour's tree with roots on the lot, needs a permit before removal or before work inside its root zone, and the suite may have to move to avoid it. Water, sewer and hydro run from the main house or from the street, and the trench is part of the job. The old garage comes down under a demolition permit before the suite goes up.
What the suite can and cannot be
A laneway suite is a self-contained home with its own kitchen, bathroom and entrance. It can be rented, used by family or used as an office. It cannot be severed from the main lot or sold on its own under the current rules. It is an additional unit on your property, and the property stays one title.
Savino Construction runs the lot check against the by-law before design. If the lot qualifies, the design goes ahead as-of-right, meaning no Committee of Adjustment hearing. If it misses on one rule, we tell you what a variance would involve and whether it is worth pursuing.