Appendix A
Occupancy Classification and Use Definitions (2019 California Building Code)
Occupancy Type Definition
Educational Group E Occupancy includes, among others, the use of a building or structure, or a portion thereof, by more than six persons at any one time for educational purposes through the 12th
grade.
Residential Group R-1 Residential occupancies containing sleeping units where the occupants are primarily transient in nature such as hotels, motels, and boarding houses (with more than 10 occupants).
Residential Group R-2 Residential occupancies containing sleeping units or more than two dwelling units where the occupants are primarily permanent in nature such as apartment houses, boarding
houses (with more than 16 occupants), convents and
monasteries, dormitories, and fraternities and sororities.
Residential Group R-2.1 Buildings, structures or parts thereof housing clients, on a 24-hour basis, who because of age, mental disability or other reasons, live in a supervised residential environment that provides personal care services such as residential care facilities, group homes, and halfway houses. This occupancy may contain more than six non-ambulatory and/or bedridden clients.
Residential Group R-4 Residential Group R-4 occupancies shall include buildings, structures or portions thereof for more than six ambulatory clients, but not more than 16 persons, excluding staff, who reside on a 24-hour basis in a supervised residential
environment and receive custodial care, such as residential care facilities, group homes, and halfway houses.