Paramount, CA Building Safety: Fire Sprinkler Requirements (2026)

Section 17.104.190 of the Paramount Municipal Code ties the ADU sprinkler duty to the primary residence. If sprinklers are required in the primary residence, they are required in the ADU. If they are not, the ADU does not need them. The section also protects existing homes: the construction of an ADU does not trigger a requirement to install fire sprinklers in the existing primary dwelling. The section sets no sprinkler trigger of its own, so the answer for any lot in the City of Paramount starts with the primary residence.

Other parts of Chapter 17.104 keep fire safety in the picture without adding sprinklers. Section 17.104.080 applies the building code requirements of Title 15 to ADUs and JADUs, with one limit: building an ADU does not count as a Group R occupancy change unless the building official or enforcement agency makes a written finding, based on substantial evidence in the record, that the ADU could have a specific, adverse impact on public health and safety. Section 17.104.140(C) says converted garages and accessory structures still have to meet life safety, emergency egress and fire code requirements, and section 17.104.220(A)(3) requires side and rear setbacks sufficient for fire safety as dictated by applicable City fire and building codes. Section 17.104.130 requires a minimum six-foot separation between a detached ADU and the existing single-family dwelling or any accessory structure on the lot.

Two-unit residential developments follow a stricter rule. Section 17.08.130, which covers two-unit residential developments and urban lot splits, includes a fire sprinklers standard stating that units created through two-unit developments shall be fire-sprinklered to applicable residential standards. Section 17.104.030 also notes that fire departments count as permitting agencies, and that the City has no authority over permitting agencies that are not part of the City.