All buildings, hereafter erected, constructed, or moved in, of five thousand (5,000) square feet or more in floor area, and all additions to existing buildings hereafter erected, constructed, or moved in, when the addition to the existing building results in a total combined floor area of five thousand (5,000) square feet or more, shall be equipped with an approved automatic fire sprinkler system in all occupancies as defined in the 2022 Edition of the California building code and amendments thereto, except occupancies defined in chapter 3 of the California building code, 2022 Edition, as R-3 and U, all of which shall conform to the regulations of the California building code, 2022 Edition. The square footage shall be determined by measurement of the exterior wall dimensions. When an addition results in a building with total combined square footage of five thousand (5,000) square feet or more in floor area, the entire building, existing and addition, shall be equipped with an approved automatic fire sprinkler system. Other construction specifications shall be required as deemed necessary for fire protection by the building official and/or fire chief in all buildings, regardless of size and group occupancies. An approved automatic fire sprinkler system shall be as defined and outlined in chapter 9 of the 2022 Edition of the California building code and all amendments thereto. (Ord. 2016-7, 12-5-2016; amd. Ord. 2023-2, 4-17-2023)