Official Zone Zero resources for San Bernardino 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• Board of Forestry and Fire Protection (bof.fire.ca.gov): the Zone 0 regulatory drafts, including the withdrawn emergency filing (OAL 2026-0828-03E, September 8, 2026).
• CAL FIRE (fire.ca.gov): Fire Hazard Severity Zone maps, the official Zone 0 FAQ, and defensible space guidance. The 2025 remap lives here.
• OSFM FHSZ viewer: look up your exact parcel's tier, the decisive first check anywhere in this county.
• San Bernardino County Fire Protection District (sbcfire.org): the AHJ for most of the mountains, the city of San Bernardino, and most unincorporated territory.
• Ordinance 4489 (June 10, 2025): LRA Fire Hazard Severity Zone map adoption, not Zone 0. sbcfire.org FHSZ maps.
• OAL recent emergency actions: filing 2026-0828-03E withdrawn September 8, 2026. oal.ca.gov.
• CAL FIRE San Bernardino Unit: the contract fire authority for Highland and Yucaipa.
• Running Springs Fire Department, Big Bear Fire Department, Redlands Fire Department, Rancho Cucamonga Fire District: the independent local AHJs in this site's roster.
• IBHS (ibhs.org): the ember-intrusion research underlying the ember-resistant zone standard, with this county's 2007 Grass Valley Fire among the field evidence.
• Statewide context: Zone Zero California, the network's statewide guide and zone checker.

Regulations move. Statewide Zone 0 is Proposed — not in force as of September 19, 2026. Local adoptions and maps continue. Anything time-sensitive on this site should be verified against these sources before you make decisions.