Cathedral City, CA Building Safety: Fire Sprinkler Requirements (2026)

Section 903.6.1 is added to the Cathedral City Fire Code by § 8.12.060. It requires an approved automatic fire sprinkler system in any existing building or structure undergoing construction or alteration that adds square footage exceeding the total aggregate floor area prescribed in Section 903.2. Two exceptions apply: one- and two-family dwellings and manufactured homes, and additions to occupancies equating to 50% or less of total floor area. For those exempted occupancies, sprinkler requirements are determined based on California Fire Code Table B105.1, Minimum Required Fire Flow for Buildings.

The amendments printed in the same section set the Section 903.2 area triggers for non-residential groups. Groups A-1, A-2, A-3, E, F-1, M, S-1 and S-2 carry a 3,000 square foot aggregate fire area trigger, and Group F-2 uses the same figure for new buildings. Group B needs sprinklers when the fire area exceeds 3,000 square feet, has an occupant load of 100 or more persons, or sits on a floor other than the level of exit discharge. Any building constructed within 10 feet of an existing fire sprinkler protected building must be sprinklered under Section 903.2.20.1, and a tenant improvement that raises the aggregate fire area by 50% or more brings Section 903 into play. Cannabis cultivation and manufacturing in an existing structure faces a 12,000 square foot trigger for one fire area, or 24,000 square feet combined across floors. Section 901.4 requires an existing non-conforming building to meet new-construction fire safety rules when floor area grows by more than 50%, when a change in occupancy significantly changes the use, or when structural repairs exceed 50% aggregate replacement.

Chapter 8.18 adopts the 2022 California Residential Code for one- and two-family properties, and the local amendment list in § 8.18.020 contains no sprinkler provision. The Cathedral City Fire Department and the Fire Chief enforce the Fire Code amendments.