Admittedly this is a few years old: https://www.kron4.com/news/bay-area/61000-homes-are-empty-in-san-francisco-report/ https://www.kron4.com/news/bay-area/61000

Admittedly this is a few years old: https://www.kron4.com/news/bay-area/61000-homes-are-empty-in-san-francisco-report/ https://www.kron4.com/news/bay-area/61000-homes-are-empty-in... 61,000 empty houses in San Francisco, 10,000 unhoused people. Even if the unhoused population is under reported by an order of magnitude, there is more than enough housing available to house everyone where they currently are.