AFAICT, in my metro and others, pretty much all the cheap housing is luxury housing from ~100 years ago. Cheap housing built 100 years ago has been torn down a

AFAICT, in my metro and others, pretty much all the cheap housing is luxury housing from ~100 years ago. Cheap housing built 100 years ago has been torn down and replaced, but the good stuff built 100 years ago is still standing and being used. The problem is that we weren't building luxury apartments 50 years ago, it was all single family housing. So there aren't any luxury apartments that can degrade into cheap housing. Building luxury apartments & condos now will help the cheap housing situation in 50 years time.