Understanding the difference between State Responsibility Areas and Local Responsibility Areas — and why it matters for defensible space, building codes, and insurance
Last reviewed: March 2026 · Governing authority: CAL FIRE / Local fire agencies
What SRA and LRA mean
Every parcel of land in California falls under one of two fire protection jurisdictions: a State Responsibility Area (SRA) or a Local Responsibility Area (LRA). This distinction determines which agency is primarily responsible for wildfire prevention and suppression on that land — and which set of legal requirements apply to property owners within it.
In a State Responsibility Area, CAL FIRE has primary financial responsibility for wildfire prevention and suppression. SRAs cover California’s rural and semi-rural wildlands — forest, chaparral, grassland, and oak woodland — where the density of development is low and the fire risk from adjacent wildland is high. Most of San Diego County’s fire-country communities are in the SRA.
In a Local Responsibility Area, a local fire department, city fire agency, or special fire district has primary responsibility. LRAs cover incorporated cities and more densely developed areas where local government provides fire protection services. Federal Responsibility Areas (FRA) — lands managed by the U.S. Forest Service, National Park Service, and Bureau of Land Management — form a third category that is distinct from both SRA and LRA.
Why the distinction matters
Defensible space
In SRAs, defensible space is governed by Public Resources Code (PRC) 4291 — CAL FIRE’s 100-foot requirement enforced by CAL FIRE inspectors. In LRAs, the parallel requirement comes from Government Code 51182, which applies to properties in locally designated Very High Fire Hazard Severity Zones (FHSZ). In LRAs with a local vegetation management ordinance, that ordinance governs — and many San Diego County fire agencies have adopted ordinances that exceed the state minimum. The obligation is the same in practical terms: maintain defensible space. But the enforcing agency, the inspection process, and the specific standard may differ based on your jurisdiction.
FHSZ mapping
FHSZ designations exist in both SRA and LRA — but the mapping authority differs. In SRAs, CAL FIRE maps the entire territory into Moderate, High, and Very High zones. In LRAs, the Office of the State Fire Marshal (OSFM) recommends designations, which local governments are then required to adopt by ordinance within 120 days. Local governments can increase the designation level above the OSFM recommendation but cannot reduce it. The 2025 LRA map update significantly expanded High and Very High designations statewide — many LRA properties now carry higher designations than they did under the previous 2007-2011 maps.
Real estate disclosures
AB 38 and Civil Code 1102.19 apply in both SRA and LRA — any seller of residential property in a High or Very High FHSZ, regardless of whether that zone is in an SRA or LRA, must provide home hardening disclosures and defensible space compliance documentation. The standard the compliance documentation is measured against may differ — PRC 4291 for SRA properties, Government Code 51182 or local ordinance for LRA properties.
Building codes
Chapter 7A of the California Building Code — the Wildland-Urban Interface building standards — applies to new construction and significant renovation in both High and Very High FHSZ areas, in both SRA and LRA. The trigger is the FHSZ designation, not the jurisdiction type.
Insurance
Insurance companies assess wildfire risk at the property level using proprietary models that consider many of the same factors as FHSZ maps but are not bound by the SRA/LRA distinction. A property in a Very High FHSZ in an LRA faces similar insurance market conditions to a comparable property in a Very High FHSZ in an SRA. The key insurance variable is the FHSZ designation and the property’s specific risk profile — not which agency enforces defensible space.
How to determine your jurisdiction
The CAL FIRE FHSZ Viewer shows both the FHSZ designation and the jurisdiction type for any address in California. The viewer distinguishes between SRA and LRA properties and shows the applicable hazard designation for each.
For San Diego County properties: most unincorporated areas — Alpine, Descanso, Julian, Pine Valley, Fallbrook, Ramona, Warner Springs, Lakeside, Valley Center, and surrounding communities — are in the SRA. Incorporated cities generally fall in the LRA, though many have Very High FHSZ designations that trigger the same legal obligations as SRA properties.
SRA and LRA in San Diego County
San Diego County has one of the most complex SRA/LRA boundary maps in California, reflecting its mix of dense coastal cities, inland suburbs, rural fire-country communities, and federal lands in the Cleveland National Forest and Anza-Borrego Desert State Park.
The communities this site focuses on — Alpine, Descanso, Ramona, Fallbrook, Julian, Santa Ysabel, Pine Valley, Mt Laguna, Warner Springs, Ranchita, and the Ring 3 backcountry communities — are overwhelmingly in the SRA. CAL FIRE’s San Diego Unit (SDU) is the primary enforcement agency for defensible space inspections, vegetation management, and fire prevention in these areas.
The Ring 1 interface communities — Lakeside, Santee, El Cajon, Escondido, Poway, and Valley Center — sit closer to the SRA/LRA boundary. Many properties in these communities are in the SRA or in LRA areas with Very High FHSZ designations. Property owners in these communities should verify their specific jurisdiction using the FHSZ Viewer rather than assuming based on city limits alone.
What changes if your jurisdiction changes
If a property’s jurisdiction shifts — for example, if an unincorporated area is annexed into a city — the governing agency for defensible space enforcement and FHSZ mapping changes. The legal obligations for the property owner generally remain similar, but the enforcing agency, inspection process, and applicable local ordinances may differ. If you have recently received an annexation notice or believe your jurisdiction has changed, verify your current status with the CAL FIRE FHSZ Viewer and contact your local fire agency for confirmation.
Related laws and pages
These laws and pages connect directly to the SRA/LRA distinction.
- PRC 4291 — Defensible space law governing SRA properties
- FHSZ Designations — The full explanation of fire hazard severity zone classifications
- AB 38 — Home hardening disclosure applicable in both SRA and LRA High/Very High FHSZ
- Civil Code 1102.19 — Defensible space compliance at point of sale in both SRA and LRA
- Check Your FHSZ Zone — Address lookup tool
- San Diego County — Regional overview
Resources and references
The following are official sources used in preparing this page.
- CAL FIRE FHSZ Viewer — SRA/LRA jurisdiction and FHSZ designation by address
- OSFM FHSZ Program — FHSZ mapping authority and LRA adoption process
- PRC 4291 — SRA defensible space law
- Government Code 51182 — LRA Very High FHSZ defensible space requirement
- CAL FIRE San Diego Unit — SRA enforcement agency for San Diego County
Disclaimers
The content on this page is provided for educational purposes only and does not constitute legal advice. Jurisdiction boundaries and FHSZ designations can change — always verify your current status using the official CAL FIRE FHSZ Viewer and consult with your local fire agency. Last reviewed March 2026.
Fire science content on this site has been developed with the assistance of AI tools and reviewed for accuracy against current CAL FIRE, NFPA, and peer-reviewed fire behavior research. This content is educational and does not constitute legal or professional advice. For property-specific guidance, consult a qualified wildfire mitigation professional.