Things Toronto has done:
Legalized basement apartments across the board (awhile ago)
Just passed legalization of rooming houses City-wide (were previously legal in some areas only)
Legalized Laneway suites
Created financial incentives for the constructive of affordable housing (waived fees/charges etc.)
Created 'Housing Now' initiative to build purpose-built rental housing, mixed income on City land with developer money. They get the land for free/cheap on, typically, a 99-year lease, in exchange they provide a portion of units as 'affordable' and/or 'deeply affordable'. (roughly housing a middle-income earner rent, and subsidized housing for low-income persons).
The initial rounds of projects are described here:
https://createto.ca/housingnow/projects/
Construction is due to start on the first of these next month.
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Additionally, Toronto has been building modular housing (Single-Room-Occupancy style) with an eye to getting people out of the conventional shelter system more quickly.
More on that here:
https://www.toronto.ca/community-peo...ng-initiative/
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For all of that, Toronto's homeless problem has grown substantially in recent years with skyrocketing prices/rents; and with de-institutionalization being a focus for those with mental health needs.
The combination, has seen Toronto's Shelter population more than triple in the last decade and a bit.
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On a go-forward basis, other than more of the same, Toronto is reviewing parking minimum standards and will likely eliminate them in areas close to transit, and otherwise reduce them.
Good as far as it goes, but more will need to happen to get affordability in check.