Official Zone Zero resources for Riverside County

Primary sources

Where the rules actually live

• Board of Forestry and Fire Protection (bof.fire.ca.gov): the Zone 0 regulatory drafts, including the April 17, 2026 text.
• CAL FIRE (fire.ca.gov): Fire Hazard Severity Zone maps, the official Zone 0 FAQ, and defensible space guidance. The 2025 county remap, including the Coachella Valley reductions, lives here.
• OSFM FHSZ viewer: look up your exact parcel's tier, the decisive check in a county where the 2025 maps moved both directions.
• Riverside County Fire Department (rvcfire.org): the AHJ for the mountain communities and contract cities.
• City departments: Hemet Fire Department, Temecula Fire Department, Palm Springs Fire Department.
• IBHS (ibhs.org): the ember-intrusion research underlying the ember-resistant zone standard.
• Statewide context: Zone Zero California, the network's statewide guide and zone checker.

Regulations move. Final Zone Zero rules are expected in late 2026, and local adoptions continue. Anything time-sensitive on this site should be verified against these sources before you make decisions.