The fire inspector walks your new cafe, looks at the wall by the kitchen door, and writes you up. You have an extinguisher — you bought a good one — but it is on the wrong wall, too far from the range, and the wrong class for a kitchen fire. None of that was obvious when you hung it.
California decides this in two steps. One section says where extinguishers are required: in most commercial occupancy groups, within 30 feet of travel from commercial cooking equipment, in areas where flammable liquids are handled, and on each floor of a building under construction (§ 906.1). A second says what size and how they are spread out, working from the hazard level of each area (§ 906.3).
Key numbers
| The requirement | The number | Where it comes from |
|---|---|---|
| Distance from commercial cooking equipment | Within 30 feet of travel distance | § 906.1 |
| Apartment buildings, per-unit option | Each dwelling unit rated at least 1-A:10-B:C | § 906.1 |
| Family day-care homes, large and small | At least 2A:10B:C | § 906.1 |
| Buildings under construction | On each floor, except detached homes | § 906.1 |
| Building protection | Extinguishers suitable for Class A fires | § 906.3 |
| Visibility | Must not be obstructed or obscured from view | § 906.3 |
Where they are required
The occupancy groups come first. Portable fire extinguishers are required in Group A, B, E, F, H, I, L, M, R-1, R-2, R-2.1, R-2.2, R-3.1, R-4 and S occupancies (§ 906.1). In plain terms that sweeps in assembly spaces, offices, schools, factories, high-hazard uses, institutional buildings, stores, hotels, apartment buildings and storage buildings.
Beyond the occupancy list, the section names specific situations:
- Within 30 feet of travel distance from commercial cooking equipment — and from domestic cooking equipment in college dormitories classed as Group R-2. Travel distance means the path you would actually walk, not a straight line through the wall.
- Areas where flammable or combustible liquids are stored, used or dispensed.
- Each floor of a structure under construction, except detached one- and two-family homes.
- Special-hazard areas, including laboratories, computer rooms and generator rooms, where the fire code official requires them.
- Within 30 feet of domestic cooking equipment in a Group I-2 occupancy — hospitals and similar care facilities.
- Large and small family day-care homes, which have their own minimum rating of 2A:10B:C.
Apartment buildings get a specific trade. In Group R-2 occupancies, extinguishers are required only in the specific locations listed above — the cooking, flammable-liquid, construction and special-hazard cases — if each dwelling unit is provided with an extinguisher having a minimum rating of 1-A:10-B:C (§ 906.1). Equip the units and the common-area obligation narrows.
The section also carries a table pointing at roughly forty additional Fire Code provisions that require extinguishers for particular operations — asphalt kettles, open burning, powered industrial trucks, repair garages, spray-finishing, dip tanks, powder coating, lumberyards, recycling facilities, industrial ovens, tents and membrane structures, high-piled storage, roofing operations, welding (Table 906.1). If you run any of those, the requirement reaches you through that table rather than through your occupancy group.
What those letters and numbers mean
An extinguisher rated 2A:10B:C is telling you two things: the classes of fire it handles, and how much of each it can handle.
The classes come from what is burning. California's distribution rules work from them directly: building protection is provided by extinguishers suitable for Class A fires — ordinary combustibles like wood, paper and cloth — while occupancy hazard protection uses extinguishers suitable for whatever Class A, B, C, D or K potentials are actually present (§ 906.3).
That distinction is why one extinguisher by the door is usually not enough in a commercial space. The building itself needs Class A coverage; the deep fryer, the paint locker or the server room needs its own. Where a building has Class B or Class C hazards, the rule is a standard complement of Class A extinguishers for the building plus additional Class B or Class C units.
An extinguisher carrying more than one letter can count for each class it lists. But when a multi-purpose unit is used to cover a Class B hazard, the shorter maximum travel distances for Class B apply.
How far apart they can be
Areas are classified as light (low) hazard, ordinary (moderate) hazard or extra (high) hazard, and a limited area of greater or lesser hazard is protected according to its own level rather than the room's (§ 906.3). On each floor, the area one extinguisher is credited with protecting — and the maximum distance someone has to walk to reach it — comes from tables in Title 19 of the California Code of Regulations.
Those tables are referenced by the code rather than reprinted in this section, so the specific spacing figures are not reproduced here. What the section does state plainly is the placement principle:
Fire extinguishers shall not be obstructed or obscured from view.
They have to be conspicuously located along normal paths of travel, readily accessible and immediately available. Where a large room makes visual obstruction unavoidable, the code expects a means of indicating the extinguisher's location — a sign, in practice. An extinguisher behind a stack of boxes is a violation even though it is technically present.
Two traps worth knowing
"Section 906" is not unique. The Existing Building Code also has a § 906, and it is about structural work in Level 3 alterations — seismic anchorage, lateral load systems. If you are handed a reference to "906" with no code name attached, check which book it came from before acting on it.
The minimum is not the design. The distribution rules set a floor, and the code says so directly: additional extinguishers may be installed to provide more suitable protection. Your insurer or your kitchen hood contractor may reasonably ask for more than the code's minimum.
What this page does not cover
These are the 2025 California codes, in effect since January 1, 2026, and they set the statewide floor — a local fire authority can require more.
Two limits worth stating. The specific spacing tables live in Title 19 of the California Code of Regulations, which the code references but does not reproduce here, so this page does not give you a maximum travel distance in feet. And nothing above covers inspection, maintenance or recharging intervals, which are a separate obligation from installing the right extinguisher in the right place.
