A house is a structure used for habitation by people that generally has walls and a roof to shelter its enclosed space from precipitation, wind, heat, and cold. Animals including both domestic pets and "unwanted" animals (such as mice) often live in houses. The word "house" may also refer to a building that shelters animals, especially within a zoo.

Families, as well as other social groups, generally live permanently in houses. English-speaking people generally call any building these routinely occupy "home". Many people leave their house during the day for work and recreation but typically return to it to sleep or for other activities.