Canada

But zero rentals is a feature, not a bug. Its the point. :)

Everyone gets a grace period, say 18 months, to sell their excess properties, and after that the state expropriates. Or landlord can opt in to expropriation during the grace period. The reimbursement they will get for the properties decreases during the grace period to incentivize people to do it earlier. Maybe almost nothing by the end. Then the state can run them directly or parcel to some structure to administer and fund for maintenance. Existing tenants get to stay where they are if they want.(

Presto chango we have massive public housing.

Idk about making old people move. Its really hard to do. Usually a terrible drama in their lives when forced. Where do you think they should all go?

I think if you were going to do it by bedroom, each person should get 1 room even in a couple because it isn't just about sleeping. A lot of people will appreciate an office or hobby room or something. It isn't healthy to be stuck in a room with another person all the time. I don't believe in penalizing people for being partnered. Welfare programs do it a lot and it really fucks with peoples lives. They have to chose between being "officially" partnered and getting full benefits as individuals, in which case their romantic relationship constitutes fraud. It also really enforces abusive situations because it enables control in bad situations. Imagine if your job could just cut your pay by 70% because they find out your in a LTR.

Canada is fucking huge we have enough space for each person to have 1 room.