The broader problem is lack of housing that can be afforded by the non-wealthy, which is caused in significant part by zoning laws. If more housing was available, the increased supply would better match the demand.
I'm sure the idea is abhorrent to the USA, but perhaps removing incentives to be a landlord at every step should be considered... mortgages should be punitive on second properties, taxes exorbitant for rented properties, insurance should be unavailable, etc. Housing should experience disintermediation, those in the housing should be the ones owning the housing.
On this site my karma will suffer for saying this out loud, but a persons fundamental right to shelter, food, health... are just not valued in the US above someone else's right to profit from depriving some of shelter, food and health... at every level it's wrong, but yet capitalism seems to demand it.