All buildings or areas of a building are classified as to their occupancy according to the occupancy classifications defined in the International Building Code 2021 Edition (IBC).

(In effect before 7/26/59; am 6/25/69, Register 30; am 2/21/71, Register 37; am 1/14/81, Register 77; am 9/15/2001, Register 159; am 8/27/2004, Register 171; am 9/13/2007, Register 183; am 11/16/2012, Register 204; am 5/19/2017, Register 222; am 10/28/2022, Register 244)