Huntington Park, CA Building Safety: Fire Sprinkler Requirements (2026)

Item 16 of § 9-3.2650, part of Article 26 adopted by Ordinance 2025-13 and effective January 23, 2026, ties accessory dwelling unit sprinklers to the main house in the City of Huntington Park. The default is no sprinklers: ADUs shall not be required to install fire sprinklers if sprinklers are not required for the primary residence. The trigger is the primary residence. If the primary residence is required to have fire sprinklers under applicable building or fire codes, any newly constructed ADU on the same parcel shall also be required to include fire sprinklers.

The wording reaches a newly constructed ADU, so the question to answer first is whether the main house itself must be sprinklered under the building or fire code. Junior accessory dwelling units get separate treatment in item 16(b). JADUs are not required to install fire sprinklers independently, and if the JADU is located within a portion of the primary residence that already contains fire sprinklers, the JADU shall be served by the existing system. A JADU is capped at 500 square feet of interior livable space and is created within a single-family dwelling, which is why it relies on the house system rather than carrying its own.

The permit path is the minor development permit in § 9-3.2630, a ministerial action decided within 60 days of a completed application. Section 9-3.2650(10) lets the City deny an ADU application for nonconformance only if the nonconformance creates a threat to public health and safety and is affected by the construction of the ADU. Section 9-3.2620 declares inconsistent local standards null and void and sends unlisted standards to the California Government Code.