Earlier quoted context omitted.
There's even lower hanging fruit than that. I have a 6 bedroom house, but local regulations state that I am not allowed to live with more than 2 people unrelated to me. Plenty of parking, tons of people looking for housing, but legally I am forced to keep 3 bedrooms empty.
>local regulations state that I am not allowed to live with more than 2 people unrelated to me What? Where is that? It sounds insane and extreme overreach. How can somebody regulate with whom consenting adults choose to live?
Usually you need to get a special license, have home inspections annually, pay various fees, etc. if you want to do so.