Can a landlord limit the # of people in an apartment?

[dmviolet]

In San Francisco, California, there is a very large apartment with three bedrooms and an extra dining room great for a 4th person to live in, but the landlord will not allow it. Can he do that?

 

[Nikalibe]

Apartments have restrictions on the number of occupants. He can get in trouble if it is not upheld. An extra dining room is not a bedroom. He pretty much has the right to deny a 4th occupant to stay in a room not designed for a bedroom.