The Canadian government estimates there are 235,000 Canadians who experience homelessness. A 2020 study suggests that there are 1.3 million unoccupied homes in Canada
Something tells me a 0.2% population decline (approximately 80,000 people, although they estimate 670,000 homes won't have to be built) isn't going to be a magic bullet solution.
edit: My math was off by an order of magnitude, which means the real numbers are more outlandish π