California’s egress rules — the requirements that govern how people leave a building in an emergency — live in the California Building Code (CBC), Title 24, Part 2 of the California Code of Regulations. The 2025 edition took effect on January 1, 2026, and applies to new construction and most alterations statewide.1California Department of General Services. 2025 Title 24 California Code Changes The code sets minimums for how many exits a space needs, how wide they must be, how far occupants can travel to reach them, and how doors, stairs, ramps, lighting, and signage must be built. Willful violations are misdemeanors, with fines up to $400, up to 30 days in county jail, and civil penalties of $500 per violation per day.
Occupant Load Sets the Numbers
Almost every egress figure in the CBC starts with occupant load: the maximum number of people a space is designed to hold. Divide the floor area by the occupant load factor assigned to that use, and the result drives the required exit count, egress width, and corridor and stairway sizing.2Division of the State Architect. IR 10-2: K-12 School – Occupancy Classification and Load Factors: 2022 CBC
Load factors vary widely by use. Assembly spaces with concentrated seating can go as low as 7 square feet per person; a typical office uses 100 square feet per person; storage areas run up to 300 square feet per person. The factors appear in CBC Table 1004.5, and you apply the factor that matches how the room actually functions, not just its occupancy classification.
How Many Exits Are Required
The CBC keys minimum exit counts to occupant load:
- 1 to 500 occupants: at least two exits or exit access doorways.
- 501 to 1,000 occupants: at least three.
- More than 1,000 occupants: at least four.
Some high-hazard occupancies require two exits no matter how small the occupant load. Exits also have to be separated so a single fire cannot block every route. Where two exits are required, they generally must be spaced at least half the length of the maximum overall diagonal of the building or area served.
Egress Width
Exit count is only half the calculation. The CBC sizes required width by multiplying the occupant load by a capacity factor: 0.3 inch per occupant for stairways, and 0.2 inch per occupant for other components like doors and corridors. That second figure drops to 0.15 inch per occupant when the building has both a full automatic sprinkler system and an emergency voice/alarm communication system.3UpCodes. Section 1005 Means of Egress Sizing
No exit path can drop below 28 inches wide, regardless of what the math produces.4California Code of Regulations. Title 8, Section 3229 Exit Width Corridors serving 50 or more occupants typically end up at 44 inches or wider once the capacity factor is applied.
Travel Distance and Dead-End Corridors
Exit access is the path from any occupied point to an actual exit. The CBC caps that distance at 150 feet in non-sprinklered buildings and 200 feet in fully sprinklered ones. High-hazard storage areas holding rapidly burning or toxic materials are limited to 75 feet, or 100 feet with sprinkler protection.5California Code of Regulations. Title 8, Section 3222 Arrangement and Distance to Exits
Dead-end corridors have their own limit. In buildings requiring more than one exit, a corridor ending in a dead end generally cannot exceed 20 feet. In business, educational, factory, mercantile, and residential occupancies, that extends to 50 feet when the building is fully sprinklered. A dead end shorter than 2.5 times the corridor’s narrowest width does not count toward the limit.
The exit access has to stay unobstructed and visible whenever the space is occupied. Furniture, stored materials, and equipment cannot narrow the path below its required width, even for a short time.
Exit Doors
Every required exit doorway must accept a door at least 3 feet wide and 6 feet 8 inches tall, with a minimum clear width of 32 inches when the door sits open at 90 degrees.6California Code of Regulations. Title 8, Section 3235 Doors
Doors must swing in the direction of travel when they serve assembly spaces, hazardous areas, or any space with an occupant load of 50 or more. Hardware has to release immediately without a key, tool, or special knowledge beyond pushing. Panic hardware, the horizontal push bars on many commercial exit doors, must release the latch with no more than 15 pounds of force applied in the direction of exit travel.6California Code of Regulations. Title 8, Section 3235 Doors
Fire-Rated Door Assemblies
When an exit door sits in a fire-rated wall, the door assembly needs a matching fire-protection rating. A two-hour fire-rated exit enclosure, for instance, requires a 1½-hour door assembly. Every fire-rated door, frame, and window must carry a label from an approved testing organization showing its rating. Missing or illegible labels can be rejected by the authority having jurisdiction at inspection.
Stairways and Guardrails
Riser heights must fall between 4 inches minimum and 7 inches maximum, measured vertically between the nosings of adjacent treads. Tread depth must be at least 11 inches, measured horizontally between the front edges of adjacent treads.7UpCodes. 1011.5 Stair Treads and Risers Within any single flight, the tallest riser cannot exceed the shortest by more than ⅜ inch, and the same tolerance applies to tread depth.
Handrails are required on both sides of every egress stairway and must run continuously for the full length of each flight. On switchback or dogleg stairs, inside handrails must be continuous between flights. Handrail height must stay uniform, mounted between 34 and 38 inches above the stair nosings.
Open guardrails along stairways and elevated walking surfaces must be built so that a 4-inch-diameter sphere cannot pass through any opening up to 34 inches above the walking surface. Between 34 and 42 inches, the threshold widens to an 8-inch sphere.
Ramps
Ramps in a means of egress cannot exceed a running slope of 1:12 (one inch of rise per 12 inches of run). Landings are required at both the top and bottom of every ramp, regardless of slope.8UpCodes. 1114A.4.1 Location of Landings
Intermediate landings must be provided for every 30 inches of vertical rise and at every change of direction. Each intermediate landing must measure at least 60 inches in the direction of ramp travel and must be at least as wide as the ramp.8UpCodes. 1114A.4.1 Location of Landings
Minimum ramp width depends on the use. The general minimum clear width is 48 inches. Ramps that carry the sole exit discharge path for 300 or more occupants must be at least 60 inches wide. Residential ramps serving 50 or fewer occupants can be as narrow as 36 inches. Ramp handrails follow the stairway specifications: both sides, 34 to 38 inches above the walking surface.
Emergency Lighting and Exit Signs
Emergency lighting must activate automatically when normal power fails and illuminate the full egress path for at least 90 minutes. The system must be arranged so that no single lamp failure leaves any portion of the path in complete darkness. Battery packs, unit equipment, and on-site generators all qualify, but the 90-minute endurance rule applies regardless of source.9UpCodes. 1008.3 Emergency Power for Illumination
Exit signs are required at every exit door and at every point along the exit access where a change of direction could confuse someone. Signs must be illuminated internally or externally and display “EXIT” in block letters at least 6 inches high with a minimum stroke width of ¾ inch. Where the CBC requires them, tactile exit signs with raised characters and Grade 2 braille must be installed at doors to exit stairways, exit passageways, and exit discharge locations.10Access Board. ADA Guides Chapter 7 – Signs
Tactile signs go on the latch side of the door. The baseline of the lowest character must sit at least 48 inches above the floor, the highest character no more than 60 inches. An 18-by-18-inch clear floor space centered on the sign must stay free of obstructions up to 80 inches high so someone can stand close enough to read by touch.10Access Board. ADA Guides Chapter 7 – Signs
Accessible Egress and Areas of Refuge
Stairs alone do not satisfy egress requirements in a building that must accommodate people who cannot use them. Federal ADA standards and the CBC together require that each accessible means of egress include at least one of the following: an accessible exit stairway paired with an area of refuge, an elevator with standby power, or a horizontal exit to an area of refuge.
Each area of refuge must include one wheelchair space of at least 30 by 48 inches for every 200 occupants (or portion thereof) served. Those spaces cannot narrow the required egress path, and access to any wheelchair space cannot be blocked by more than one other wheelchair space.11UpCodes. 1009.6 Areas of Rescue Assistance A two-way communication system is required so occupants waiting in the refuge can reach emergency responders. Exterior areas for assisted rescue follow the same sizing rules when accessible egress routes to an outdoor space instead of an enclosed interior one.12Access Board. Accessible Means of Egress Guide
Keeping the System Compliant
Fire door assemblies must be inspected annually, after initial installation, and after any maintenance. Deficiencies must be corrected without delay. Emergency lighting requires a 30-second functional test at least every 30 days and a full 90-minute battery endurance test annually. Self-diagnostic systems can automate the monthly check, but the annual full-duration test is still mandatory.
The routine violations inspectors flag are the ones building owners tend to overlook: doors propped open, exit signs with burned-out lamps, corridors narrowed by stored equipment, and ramps with damaged handrails.
Penalties for Violations
Willfully violating the California Building Code or its related building standards is a misdemeanor under California Health and Safety Code Section 18874. The criminal penalty is a fine of up to $400, up to 30 days in county jail, or both. A separate civil penalty of $500 applies for each violation, and for each day a violation continues.13California Legislative Information. California Health and Safety Code Part 2.3, Chapter 11
Building inspectors can also issue stop-work orders when construction does not match approved plans or when unpermitted work is underway. The order halts all activity until the violations are resolved. Permit holders who willfully violate building standards face potential suspension or revocation of their permit to operate.13California Legislative Information. California Health and Safety Code Part 2.3, Chapter 11