Occupancy is a defined legal term in building construction and building codes. It refers to the use or intended use of a building or part thereof for the shelter or support of persons, animals or property. A closely-related meaning is the number of units in such a building that are rented or leased, or otherwise in-use. The lack of occupancy in this sense is a vacancy. Building code It is possible to have multiple occupancies (or building uses) within one building. For instance, one may have a h… (More on Occupancy)