307A Smoke Alarms — 2025 California Existing Building Code

California Existing Building Code (Title 24, Part 10) · 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 Existing Building Code (Title 24, Part 10) § 307A · Effective January 1, 2026 · Official source: Building Standards Commission

Shall comply with the California Building Standards Code.

Explained in plain English

Guides that cite this section.

What are the smoke alarm and carbon monoxide detection requirements for alterations?

Get a plain-English answer with a citation back to this text.

Ask AI about this code

Export this section

▸Contents — California Existing Building Code (Title 24, Part 10)

California Existing Building Code (Title 24, Part 10)

GoCodebook provides public access, search, citation, multilingual explanation, and practical interpretation of legally adopted building regulations. It is not a substitute for the official ICC or California code publications.