A zoning change that turned thousands of back lanes into potential building lots

Toronto's Laneway Housing Reform

Toronto legalized laneway suites citywide in 2018, opening up roughly 3,000 back-lane lots to small secondary homes as one response to the city's housing shortage.

Toronto skyline
Toronto skyline, 2012 — Wikimedia Commons, CC BY 2.0

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Toronto's older residential neighbourhoods are threaded with a dense network of back laneways, originally built to give horse-drawn deliveries and, later, garages access to the rear of houses without using the main street. For most of the 20th century, zoning rules made it effectively illegal to build separate housing units fronting onto these laneways, leaving thousands of potential small building lots unused even as the city faced a worsening housing shortage.

Legalizing laneway suites

City Council voted in 2018 to legalize laneway suites across most of Toronto's older residential zones, permitting homeowners to build small secondary housing units on laneway-facing portions of their property, subject to size and design rules. The reform was estimated to open up roughly 3,000 potential lots citywide, and Toronto followed it a few years later with further zoning reforms permitting garden suites and, eventually, multiplexes on similar lots, part of a broader shift toward allowing more "missing middle" housing types in neighbourhoods previously restricted to detached single-family homes.

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