California now enforces the 2025 edition of NFPA 72 through the 2025 California Fire Code, effective January 1, 2026. Here is what changed, how Los Angeles-area authorities are interpreting it, and the steps commercial building owners should take to stay compliant.
Get a 2026-Compliance QuoteIf you own or manage a commercial property in Los Angeles, the San Fernando Valley, Torrance, or Santa Monica, your fire alarm inspection, testing, and maintenance (ITM) program is now evaluated against a new rulebook. The 2025 edition of NFPA 72, the National Fire Alarm and Signaling Code, has been adopted into the 2025 California Fire Code (Title 24, Part 9) and is enforced statewide beginning January 1, 2026. Los Angeles County’s own fire code update took effect the same day. This guide breaks down the changes that actually affect commercial owners, the cost implications, and what your authority having jurisdiction (AHJ) will be looking for in 2026.
California updates its building and fire codes on a three-year cycle. The 2025 California Fire Code incorporates NFPA 72, 2025 edition, by reference. The statewide effective date for enforcement is January 1, 2026. In the Los Angeles area, the Los Angeles County Fire Code also became effective January 1, 2026, and individual cities adopt the state baseline with local amendments on or around the same date. In practice, any ITM visit, plan review, or new installation evaluated in 2026 is held to the 2025 edition rather than the prior 2022-cycle rules.
The 2025 edition places new emphasis on cybersecurity for fire alarm and signaling systems that rely on network connectivity. As more commercial fire alarm panels communicate over building IT networks and the internet, the code reinforces the need to protect them from unauthorized access and cyber threats. For owners, this means your contractor should be able to document access management and basic threat protection for any networked system — not just confirm that the panel powers on and reports.
One of the most concrete operational changes: functional testing of certain supervisory devices — notably waterflow switches and valve tamper switches — has increased in frequency under the 2025 edition. Where many buildings previously tested these annually, the new cycle is semiannual. This is the change most likely to show up on your invoice, typically adding roughly $200 to $800 per building per year depending on how many devices you have.
The 2025 updates push many commercial systems toward enhanced monitoring capabilities, with newer systems expected to support improved communication pathways including dual-path monitoring. The principle is redundancy: if one communication line (for example, a cellular path) fails, a second path takes over so the central station never loses contact with the building. Owners with older single-path communicators should ask whether an upgrade is advisable or required for their occupancy.
The 2025 edition expands guidance on Restricted Audible Mode Operation, which allows reduced notification sound levels in specific environments such as schools, healthcare facilities, and certain special-occupancy spaces. RAMO is not a free pass to turn down the horns: using it requires approval from the AHJ and must be supported by a documented risk analysis. If your facility is considering RAMO, plan for the approval and documentation steps.
The 2025 code refines documentation requirements and clarifies who is responsible for design, inspection, testing, and maintenance. The intent is consistency and accountability across a building’s fire alarm program. The practical takeaway for owners: complete, well-organized ITM records are more important than ever, and gaps in record-keeping are an easy finding for an inspector to write up.
There is no single “LA fire department.” Which authority enforces the code on your building depends on where it sits:
All of these enforce the 2025 California Fire Code as the baseline, but each can add local amendments and each runs its own permit, plan-review, and re-inspection process. When in doubt about a specific requirement, your fire alarm contractor should confirm the interpretation with the AHJ that actually has jurisdiction over your address.
For most commercial buildings, the 2026 changes are a modest annual increase rather than a major capital event. The semiannual supervisory testing is the main recurring add (about $200–$800 per building per year). Buildings that need to add or upgrade dual-path communication face a one-time equipment-and-labor cost. Networked systems may incur a little extra review time for cybersecurity documentation. For context, full commercial fire alarm ITM in Los Angeles ranges from roughly $300 per year for a small space with a single fire alarm control panel up to $30,000 per year for a high-rise with 200+ devices and emergency responder communication coverage — device count is the primary driver. (These are market-range figures; your actual cost depends on your building.)
For the underlying testing frequencies behind these rules, see our guide to NFPA 72 inspection frequency. To book code-compliant work, see annual fire alarm testing and ongoing fire alarm maintenance. Reviewing a specific property? We cover Los Angeles, the San Fernando Valley, Torrance, and Santa Monica.