California updates its building and fire codes on a triennial cycle, adopted by the California Building Standards Commission and published as Titles 24 (CBC) and 19 (CFC and CCR). The 2025 edition is the current reference for permits pulled during this cycle, and it carries several changes worth knowing about before your next commercial project hits plan review.
The framework, briefly
The CBC amends the International Building Code (IBC) with California-specific rules, and the CFC amends the International Fire Code (IFC). Both reference NFPA standards — most importantly NFPA 72 for fire alarm and signaling, NFPA 13 for sprinklers, and NFPA 101 (as adopted) for occupancy separation. Local AHJs — LAFD, SFFD, OCFA, Santa Clara County Fire, and others — can and do amend the CFC further. Always check for local amendments before you commit to a design.
What changed for fire alarm
Voice evacuation triggers
The 2025 CBC clarifies voice evacuation and mass notification requirements for higher-hazard and higher-occupancy buildings. Expect voice-EVAC to be the default expectation on Group A (assembly), Group E (educational), and Group I-2 (hospitals) at lower occupant-load thresholds than a design team may be used to. Design for voice from the start rather than retrofitting horns and strobes later.
Elevator recall and monitoring
Elevator recall (Phase I / Phase II) requirements continue to align with ASME A17.1. The change worth flagging is around elevator machine-room detection and communication path: the two-way emergency phone line must be supervised and reach a live monitoring center — the operational implication of copper POTS retirement is now firmly baked into California code enforcement.
Carbon monoxide and combustion detection
CO detection requirements have expanded in some occupancies with fuel-burning appliances or attached parking. Coordinate with your fire alarm design; CO alarms in commercial buildings typically report through the fire alarm system for supervised monitoring.
Wildland-urban interface (WUI) zones
Chapter 7A of the CBC continues to strengthen exterior detection and hardened construction expectations in WUI zones. For commercial buildings in WUI counties — much of Marin, Sonoma, San Diego, and the Sierra foothills — plan for exterior heat detection, monitored generator and fuel-tank alarms, and hardened outdoor devices.
What changed for security and access
The CBC and CFC do not directly govern access control or video surveillance, but they do govern egress. Any electrified door hardware you install must fail safe under alarm, integrate with the fire alarm relay, and preserve the free-egress path. The 2025 edition tightens language around delayed-egress and controlled-egress locking — coordinate with your fire alarm designer and the AHJ before specifying magnetic locks on any egress door.
Practical checklist for your next project
- Confirm which CBC/CFC edition your local AHJ is enforcing. Adoption can lag the state publication by months.
- Ask for local amendments in writing. LAFD, SFFD, and OCFA publish theirs; smaller jurisdictions often have them in AHJ policy memos.
- Design voice-EVAC and mass-notification capability into the fire alarm platform from schematic design, even if you don't activate it initially.
- Retire copper POTS on any elevator line as part of the project scope. Do not push it to a follow-on project.
- Coordinate access-control hardware selection with the fire alarm design early; delayed-egress and mag-lock discussions late in construction are expensive.
The 2025 CBC/CFC cycle is not radical, but the direction is consistent: broader voice-EVAC, hardened outdoor detection, supervised communication paths, and tighter egress control on electrified hardware. Design to it from the start and plan review moves fast.