occupancy

n. [ See Occupant. ] 1. The act of taking or holding possession, especially of real property or rental property; possession; occupation. [ 1913 Webster ]

2. The state or condition of being occupied; as, occupancy by more than 250 people is dangerous and unlawful. [ PJC ]

3. The period of time during which one occupies a property. [ PJC ]

Title by occupancy (Law), a right of property acquired by taking the first possession of a thing, or possession of a thing which belonged to nobody, and appropriating it. Blackstone. Kent. [ 1913 Webster ]