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Chapter 4 — WILDLAND-URBAN INTERFACE AREA REQUIREMENTS

2025 California Wildland-Urban Interface Code (Title 24, Part 7.5) · 2025 edition · updated 2026-07-27 · California

User notes:

About this chapter: Chapter 4 provides requirements that apply to all occupancies in the wildland-urban interface and pertain to all of the following:

  1. Fire service access to the property that is to be protected, including fire apparatus access roads and off-road driveways.

  2. Premises identification.

  3. Key boxes to provide ready access to properties secured by gated roadways or other impediments to rapid fire service access.

  4. Fire protection water supplies, including adequate water sources, pumper apparatus drafting sites, fire hydrant systems and system reliability.

  5. Fire department access to equipment such as fire suppression equipment and fire hydrants.

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▸ Contents — 2025 California Wildland-Urban Interface Code (Title 24, Part 7.5)
2025 California Wildland-Urban Interface Code (Title 24, Part 7.5)
  1. Chapter 1 — ADMINISTRATION
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — WILDLAND-URBAN INTERFACE AREAS
  4. ▸ Chapter 4 — WILDLAND-URBAN INTERFACE AREA REQUIREMENTS
    Overview
    1. Section 401 — GENERAL
    2. Section 402 — APPLICABILITY
    3. Section 403 — ACCESS
    4. Section 404 — WATER SUPPLY
  5. Chapter 5 — SPECIAL BUILDING CONSTRUCTION REGULATIONS
  6. Chapter 6 — FIRE PROTECTION REQUIREMENTS
  7. Chapter 7 — REFERENCED STANDARDS
  8. Appendix A — GENERAL REQUIREMENTS
  9. Appendix B — VEGETATION MANAGEMENT PLAN
  10. Appendix C — COMMUNITY WILDLAND-URBAN INTERFACE (WUI) FIRE HAZ…
  11. Appendix D — MODEL ORDINANCE FOR FIRE HAZARD SEVERITY ZONE ADO…
  12. Appendix E — RESERVED
  13. Appendix F — CHARACTERISTICS OF FIRE-SMART VEGETATION
  14. Appendix G — VOLUNTARY HOME-HARDENING RECOMMENDATIONS
  15. Appendix H — REFERENCED CALIFORNIA DOCUMENTS
  16. Appendix I — BOARD OF APPEALS

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