It isn't a supply and demand issue IMO. If more housing is built then it gets bought up by property managers and they just raise the prices and make it unavailable to people based on the American social credit system. If you're on unemployment or facing some hardship and have poor overall credit but good rental history and enough monthly income for rent, good luck finding housing that isn't in terrible shape, in a low crime area, and an ethical landlord.

However, if rural areas allowed individuals to have access to small plots of land and utilize cheap portable housing units where they could work on sustainable agriculture and community programs to promote self-sufficiency, and social safety nets to address issues of people with disabilities that may not be able to care for themselves without assistance then I believe the homeless crisis could be greatly adverted and also give purpose and fulfillment to those struggling with inner-city homeless issues.