Memes

Corps can't own houses

People can only own a few (say, 2) houses (Marriage, death, inheritance, etc. This makes things easier in the long run).

Multi tenant buildings must be majority owned by a tenant co-op, where all tenants have equal say in all building related things and share in the profits This makes sure landlords can't raise rent without convincing the tenants that it's worth the price, incentives the tenants to either maintain the property or hire professionals, and makes their rent an investment in their property, just like a home owner

I'm sure there's holes all over this plan, but I (and some friends) have put thought into this one a bit.