I find the name "housing crisis" misleading, because if I look at average floor area per capita, I think we should call this "expectations changed faster than buildings". For example https://doi.org/10.2908/ILC_HCMH01 (variation between 43 to 141).
The US and Canada (and to some extent elsewhere) have been experiencing a lot of homelessness and open air drug use due to fentanyl, housing unaffordability, and "community" mental health treatment rather than "mental hospitals."
There's specific pages for some individual countries, too:
https://en.wikipedia.org/wiki/Housing_crisis_in_the_United_S...
https://en.wikipedia.org/wiki/Affordable_housing_in_Canada#A...