It depends on zoning. Rarely houses are used as storefronts, museums, or businesses such as psychologists and dentists offices. Other times houses are used by

It depends on zoning. Rarely houses are used as storefronts, museums, or businesses such as psychologists and dentists offices. Other times houses are used by rich mostly-foreigners as places to stash cash. And not all of these investors care whether the house is occupied by a renter. These aren't large uses of houses, but they are some.