Appendix A — GENERAL REQUIREMENTS
A105 Control of Storage — 2025 California Wildland-Urban Interface Code
California Wildland-Urban Interface Code (Title 24, Part 7.5) · 2025 edition · updated 2026-09-25 · California
Cite as: 2025 California Wildland-Urban Interface Code (Title 24, Part 7.5) § A105 · Effective January 1, 2026 · Official source: Building Standards Commission
A105.1 General.¶
In addition to the requirements of the California Fire Code, storage and use of the materials shall be in accordance with Sections A105.2 through A105.4.2.
A105.2 Hazardous materials.¶
Hazardous materials in excess of 10 gallons (37.8 L) of liquid, 200 cubic feet (5.66 m [3] ) of gas, or 10 pounds (4.54 kg) of solids require a permit and shall comply with nationally recognized standards for storage and use.
APPENDIX A—GENERAL REQUIREMENTS
A105.3 Explosives.¶
Explosives shall not be possessed, kept, stored, sold, offered for sale, given away, used, discharged, transported or disposed of within wildland-urban interface areas, except by permit from the code official.
A105.4 Combustible materials.¶
Outside storage of combustible materials such as, but not limited to, wood, rubber tires, building materials or paper products shall comply with the other applicable sections of this code and this section. A105.4.1 Individual piles. Individual piles shall not exceed 5,000 square feet (465 m [2] ) of contiguous area. Piles shall not exceed 50,000 cubic feet (1416 m [3] ) in volume or 10 feet (3048 mm) in height.
A105.4.2 Separation. A clear space of not less than 40 feet (12 192 mm) shall be provided between piles. The clear space shall not contain combustible material or nonfire-smart vegetation.
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