Ch. 3 Occupancy Classification and Use — 2025 California Building Code
California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-10-19 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Building Code (Title 24, Part 2) Chapter 3 · Effective January 1, 2026 · Official source: Building Standards Commission
(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)
| Adopting agency | BSC | BSC-CG | SFM | HCD 1 | HCD 2 | HCD 1/AC | DSA AC | DSA SS | DSA SS/CC | OSHPD 1 | OSHPD 1R | OSHPD 2 | OSHPD 3 | OSHPD 4 | OSHPD 5 | OSHPD 6 | BSCC | DPH | AGR | DWR | CEC | CA | SL | SLC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Adopt entire chapter | X | X | X | X | X | X | X | X | X | X | ||||||||||||||
| Adopt entire chapter as amended (amended sections listed below) | X | X | X | |||||||||||||||||||||
| Adopt only those sections that are listed below | X | |||||||||||||||||||||||
| Chapter / Section | ||||||||||||||||||||||||
| 302.1 | X | X | X | |||||||||||||||||||||
| 302.1.3 | X | |||||||||||||||||||||||
| 303.1 | X | |||||||||||||||||||||||
| 303.2 | X | |||||||||||||||||||||||
| 303.7 | X | |||||||||||||||||||||||
| 303.8 | X | |||||||||||||||||||||||
| 304.1 | X | |||||||||||||||||||||||
| 305.1 | X | |||||||||||||||||||||||
| 305.2 | X | |||||||||||||||||||||||
| 305.2.1 | X | |||||||||||||||||||||||
| 306.2 | X | |||||||||||||||||||||||
| Table 307.1(1) | X | |||||||||||||||||||||||
| Table 307.1(2) | X | |||||||||||||||||||||||
| 307.1.1 | X | |||||||||||||||||||||||
| 307.4 | X | |||||||||||||||||||||||
| 308.1 | X | |||||||||||||||||||||||
| 308.3 | X | † | † | |||||||||||||||||||||
| 308.4 | X | |||||||||||||||||||||||
| 308.4.6 | X | |||||||||||||||||||||||
| 308.4.7 | X | |||||||||||||||||||||||
| 308.4.8 | X | |||||||||||||||||||||||
| 308.4.9 | X | |||||||||||||||||||||||
| 308.5 | X | |||||||||||||||||||||||
| 308.5.2 | X | |||||||||||||||||||||||
| 308.5.3 | X | |||||||||||||||||||||||
| 308.5.4 | X | |||||||||||||||||||||||
| 310.1 | X | |||||||||||||||||||||||
| 310.2 | X | X | ||||||||||||||||||||||
| 310.3 | X | X | ||||||||||||||||||||||
| 310.3.1 | X | |||||||||||||||||||||||
| 310.3.2 | X | |||||||||||||||||||||||
| 310.4 | X | X | ||||||||||||||||||||||
| 310.4.1 | X | |||||||||||||||||||||||
| 310.4.2 | X | X | X | |||||||||||||||||||||
| 310.5 | X | |||||||||||||||||||||||
| 310.6 | X | |||||||||||||||||||||||
| 313 | X | |||||||||||||||||||||||
| 314 | X |
The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
User notes:
About this chapter: Chapter 3 provides the criteria by which buildings and structures are classified into use groups and occupancies. Through the balance of the code, occupancy classification is fundamental in the setting of features of construction; occupant safety requirements, especially building limitations; means of egress; fire protection systems; and interior finishes.
ICC code development note: Code change proposals to sections preceded by the designation [F] will be considered by the IFC code development committee meeting during the 2024 (Group A) Code Development Cycle. All other code change proposals will be considered by a code development committee meeting during the 2025 (Group B) Code Development Cycle.
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