It's a simple problem, we turned housing into an investment. Now everyone who owns a home is incentivized to ensure their investment is maximized and that results in a lot of NIMBYism. The simple solution is we need more housing in cities and suburbs. How we get there is an exercise that's taken on by local housing authorities and they are not incentivized to solve the problem. That's because they work for voters who are currently living in the area opposed to future people who aren't contributing to the vote.
States are going to have to step in and override cities that aren't being effective, this cannot be solved from the federal level. They are going to have to say, these permitting processes are too restrictive, homeowners can add backyard units or convert their homes to duplexes/etc, and make it easy for apartment builders to buy a few homes to make small apartment complexes even if the neighborhood hates it or the city has been stalling on that kind of development.
States are going to have to step in and override cities that aren't being effective, this cannot be solved from the federal level. They are going to have to say, these permitting processes are too restrictive, homeowners can add backyard units or convert their homes to duplexes/etc, and make it easy for apartment builders to buy a few homes to make small apartment complexes even if the neighborhood hates it or the city has been stalling on that kind of development.