Originally Posted by magictoy

I doubt it's unconstitutional--if so, a lot of hotels are in hot water for charging by the number of room occupants.

What IS illegal is specifying "no children," or "no more than four occupants" or the like, which is an attempt to limit the number of children in a unit. Except in senior citizens' complexes, which seem to occupy their own privileged category.

More likely, the owner doesn't want to be on the hook for the additional utilities, additional wear and tear, and complaints from the neighbors.