Amend Section R313.1 of the 2022 California Residential Code to read as follows:
R313.1 Townhouse automatic fire sprinkler systems. An automatic residential fire sprinkler system shall be installed in all new townhouses and in existing townhouses when additions are made that increase the building area to more than 3,600 square feet.
Exception:
One or more additions made to a building after January 1, 2011 that does not total more than 1,000 square feet of building area.
Amend Section R313.2 of the 2022 California Residential Code to read as follows:
R313.2 One- and two-family dwellings automatic sprinkler systems. An automatic sprinkler system shall be installed in all new one- and two-family dwellings, rebuild of existing one- and two-family dwellings as defined by the Building Official, and existing one- and two-family dwellings when additions are made that increase the fire area to more than 3,600 square feet.
Exceptions:
1. Detached Accessory Dwelling Unit, provided that all of the following are met:
1.1. The unit meets the definition of an Accessory Dwelling Unit as defined in the Government Code Section 65852.2.
1.2. The existing primary residence does not have automatic fire sprinklers.
1.3. The accessory detached dwelling unit does not exceed 1,200 square feet in size.
1.4. The unit is on the same lot as the primary residence.
1.5. The unit meets all apparatus access and water supply requirements of Chapter 5 and Appendix B of the 2022 California Fire Code.
2. When additions are made to existing structures, causing the fire area to exceed 3,600 square feet, and all of the following are met:
2.1. Building addition does not exceed 500 square feet.
2.2. The resultant structure meets all water supply requirements of Chapter 5 and Appendix B of the 2022 California Fire Code.
(Ord. 22-2245, part, 2022; Ord. 19-2189, § 1 (part), 2019)