Merriam-Webster Collegiate Dictionary - occupancy

 noun  (plural -cies)  Date: 1596  1. the fact or condition of holding, possessing, or residing in or on something ~ of the estate  2. the act or fact of taking or having possession (as of unowned land) to acquire ownership  3. the fact or condition of being occupied ~ by more than 400 persons is unlawful  4. the use to which a property is put industrial ~  5. a building or part of a building intended to be occupied (as by a tenant)