Appendix F Rodentproofing — 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) Appendix F · Effective January 1, 2026 · Official source: Building Standards Commission
The provisions contained in this appendix are not mandatory unless specifically adopted by a state agency or referenced in the adopting ordinance.
User notes:
About this appendix: The provisions of Appendix F are minimum mechanical methods to prevent the entry of rodents into a building. These standards, when used in conjunction with cleanliness and maintenance programs, can significantly reduce the potential of rodents invading a building.
ICC code development note: Code change proposals to this appendix will be considered by the IBC—Structural Code Development Committee during the
2025 (Group B) Code Development Cycle.
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