Here's how many basement and secondary units exist in Toronto

Jun 2 2021, 11:18 am

More than 15% of Toronto houses have secondary units or basement apartments, according to a new Canada Mortgage and Housing Corporation (CMHC) study.

The study, which evaluated the number of secondary units in cities across Ontario, found that Toronto has the highest percentage of secondary units in the province. Close to 75,000 ground-oriented homes — which is equivalent to about every one in six of these homes — had some form of a secondary unit in Toronto.

Basement apartments accounted for nearly half of the secondary units in the city, while the remainder is composed of other types, such as laneway houses or units above a detached garage.

Toronto secondary units


The CMHC report found that secondary units are most common in cities like Toronto that have experienced years of low vacancy rates. This also includes cities like Mississauga, Kingston, and Guelph.

“A lack of options in the primary rental market has resulted in greater demand for other forms of rental housing, such as secondary units,” the report reads. “Low vacancy rates have also produced strong rent growth, encouraging a larger percentage of homeowners from these municipalities to add a secondary unit.”

Certain property features increased the likelihood of having a secondary unit, according to the study, including older homes and homes with private parking.

It was also found that single-story homes were overrepresented in having secondary units, which the report attributes to the fact that “many single-storey homes were built with a separate entrance to the basement, a provincial requirement for adding this type of secondary unit.”

Nearby Brampton and Mississauga followed Toronto with the second and third highest rate of secondary units, though neither cracked 10%.

Laura HanrahanLaura Hanrahan

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