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Chapter 4 — SPECIAL DETAILED REQUIREMENTS BASED ON OCCUPANCY AND USE

413 Combustible Storage — 2025 California Building Code

California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-09-25 · 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) § 413 · Effective January 1, 2026 · Official source: Building Standards Commission

413.1 General.

High-piled stock or rack storage in any occupancy group shall comply with the California Fire Code .

Exceptions & meaning →

413.2 Attic, under-floor and concealed spaces.

Attic, under-floor and concealed spaces used for storage of combustible materials shall be protected on the storage side as required for 1-hour fire-resistance-rated construction. Openings shall be protected by assemblies that are self-closing and are of noncombustible construction or solid wood core not less than 1 3/4 inches (45 mm) in thickness.

Exception: Neither fire-resistance-rated construction nor opening protectives are required in any of the following locations:

  1. Areas protected by approved automatic sprinkler systems.
  2. Group R-3 and U occupancies.
Exceptions & meaning →

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▸Contents — California Building Code (Title 24, Part 2)
California Building Code (Title 24, Part 2)

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