County guide

Zone 0 in Los Angeles County: what applies where

Fact-checked August 23, 2026·Sources at the end of this article

Two laws, two map layers: where the adopted rule reaches

Geography settles most of this. The statewide Zone 0 regulation (the ember-resistant zone covering the first five feet around a structure) was adopted on August 19, 2026 and is not yet in effect, but its scope is settled: it applies in two kinds of places, and Los Angeles County has plenty of both.

The first is the State Responsibility Area (SRA), land where the state holds financial responsibility for wildfire protection. There, the regulation covers every hazard class (Very High, High, and Moderate) under Public Resources Code §4291. The second is the Local Responsibility Area (LRA), land protected by a city or local fire agency rather than the state, which here includes both incorporated cities and county-protected unincorporated communities like Altadena, where it covers only Very High Fire Hazard Severity Zones (FHSZs) under Government Code §51182. Federal Responsibility Area land is not covered.

A structural quirk: Los Angeles is one of California's six CAL FIRE "contract counties" (with Santa Barbara, Kern, Marin, Orange, and Ventura). The Los Angeles County Fire Department provides SRA fire protection under contract with CAL FIRE; there is no separate CAL FIRE unit running the SRA inside the county.

The communities mapped Very High: the sourced list

The State Fire Marshal issued the 2025 recommended LRA hazard maps for Los Angeles County on March 24, 2025, the first update since 2011. Countywide, Very High acreage grew more than 30%. State law gives local agencies 120 days to adopt the zones by ordinance; we could not confirm final adoption ordinances for the county or the City of LA, so treat adoption as in progress.

What the sources establish:

• Malibu: the entire city is in a Very High FHSZ, and has been since the 2007 maps, per the city's June 2025 staff report.
• La Cañada Flintridge: the entire city is designated Very High, per the city's Building & Safety division.
• City of Los Angeles: the city's Very High zone, first established in 1999, covers 31+ hillside and mountain communities including Pacific Palisades, Bel Air Estates, Brentwood, Encino, Hollywood, Los Feliz, Sherman Oaks, Baldwin Hills, San Pedro, and Woodland Hills. LAFD estimates the 2025 maps will increase the parcels covered.
• Altadena and Pasadena: Very High zones expanded on the 2025 maps. But as LAist reported, the mapped zones did not reach as far into Altadena as the January 2025 Eaton fire actually spread, because the state model assesses wildland fire, not urban conflagration.
• Santa Clarita Valley: local news reported the 2025 maps put most of the valley in Very High. We could not load the primary source; treat as reported, not verified.

The local ordinance reality: nothing adopted, and one city pushing back

Some trade publications have reported that Los Angeles County has its own local Zone 0 ordinance already in force. We went looking and could not find it. No adopted county-level Zone 0 or ember-zone ordinance turned up, and the county's own 2026 clearance notice, mailed to every declared parcel owner before the Board acted, says the opposite in its AB 3074 update:

As of now, the requirements have not been identified; however, the Board of Forestry anticipates making a final determination in 2026. This legislation is expected to severely restrict combustible material within five feet of all residential structures within all SRA Fire Hazard Severity Zones and the LRA Very High Fire Hazard Severity Zone.

Los Angeles County Fire Department, 2026 Annual Defensible Space Clearance Notice

The Board made that determination on August 19, 2026. The same notice told residents that once it did, "requirements will be immediately effective for all new construction and will apply to existing structures three years later." The adopted package is more granular than that summary: for existing structures, roof and gutter debris and the tree-maintenance items apply on the effective date itself, other combustible-material items run three years, and vegetation buffers, fences, gates and outbuildings run three years in the Local Responsibility Area, extendable to five, and five in the State Responsibility Area. Our timeline and enforcement page lays out the tiers, none of which is running yet, because the regulation has no effective date.

Meanwhile the City of Los Angeles is moving the other way. In January 2026, the City Council directed LAFD to draft its own more lenient Zone 0 rules, rules that allow healthy vegetation and do not require removing tree limbs within five feet of a house. No ordinance has been adopted. The contested items are vegetation and tree limbs. Fences are not in dispute; the no-combustible-fence provision has broad support among fire professionals. For how LA compares with jurisdictions that have adopted rules, see our local ordinance roundup.

One city adoption is now fully read, and it is not a Zone 0 rule. The City of Santa Monica adopted the 2025 California Wildland-Urban Interface Code on October 14, 2025, by Ordinance 2831CCS, codified as Municipal Code Chapter 8.39. For months we could confirm only that its local amendments existed and began at Section 604.2, because the code publisher's page would not finish loading in any tool we had; on August 23, 2026 the codified chapter loaded in full, and the answer is short. The complete list of local amendments is one section: 604.2, which extends the code's hazardous vegetation and fuel management duty to State Responsibility Area lands, to High as well as Very High severity zones designated by a city or local agency, and to locally designated WUI areas. That is a broadening of where fuel management applies, and it is the entire local package: no fence provision, no five-foot materials rule, no Zone 0 anywhere in the chapter. A reader who saw "Santa Monica adopts wildfire code" in a headline and assumed a fence rule followed would be wrong in the way this site exists to catch.

Which cities we actually checked, and what we found

Added August 30, 2026. This page says the county has no Zone 0 ordinance. That is a statement about the county, and readers reasonably want to know about their own city, so we read them. Using each city's codified text, current through 2026 in every case, we searched the building, construction, fire, wildland, safety and health titles for the two model sentence families, for the section numbers they use, for "ember-resistant zone", and for a five-foot distance sitting near a noncombustible or ignition-resistant term.

Read and nothing found: Agoura Hills, Calabasas, Hidden Hills, Westlake Village, Rolling Hills, Rolling Hills Estates, Rancho Palos Verdes, Sierra Madre, Bradbury, Azusa, Arcadia, Diamond Bar, and in neighboring Ventura County, Camarillo and Fillmore. Several of those are among the most wildfire-exposed cities in California, which is the point: exposure is not what decides whether a city writes its own rule.

What a negative here does and does not mean. It means these cities have not written Zone 0 rules into their own municipal codes, in either the modern wording or the older one. It does not mean no rule reaches those addresses, because a rule can belong to the fire agency rather than the city. The clearest illustration is in another county entirely: Moraga and Orinda both came back empty, and the fire district that serves them has a Zone 0 rule of its own. The full sweep, and how much it misses, is set out here.

Who inspects: two separate programs, two sets of fees

Zone 0 may be pending, but defensible space enforcement here is not. Which agency visits you depends on where you live. The Los Angeles County Fire Department (legally the Consolidated Fire Protection District) serves the unincorporated areas plus 59 contract cities, including Malibu, La Cañada Flintridge, Santa Clarita, Calabasas, Palmdale, and Rancho Palos Verdes. The City of Los Angeles is not among them: LAFD runs its own brush clearance program inside the city's Very High zone.

Two details worth flagging. If you sell a home in a fire hazard zone, AB 38 requires a compliant defensible space inspection report during escrow; the county program handles these. And LAFD's city requirements already mention fences: grass within 10 feet of a combustible fence must be cut to 3 inches. Your fence is on the inspection radar before any Zone 0 rule exists.

Local help: what exists, and what we could not confirm

The Santa Monica Mountains Fire Safe Council is the most developed homeowner resource in the county: Home Ignition Zone property evaluations, a tool lending library, Firewise USA community support, and a dedicated Zone Zero education page (contact: [email protected], 818-964-1847). The county's fee relief for January 2025 fire survivors is described above.

Being honest about the gaps: a claim that county fire offers free home hardening assessments appeared only in search summaries; we found no county page confirming it. And no California program currently pays for fence replacement as a standalone item statewide; most fuels-reduction grants cover vegetation only. Budget accordingly.

What this means for you

Nothing about Zone 0 requires action from a Los Angeles County homeowner today, adoption included. The sensible order of operations:

1. Find your zone. Use our address lookup walkthrough for the official CAL FIRE / OSFM maps. If you are in the SRA (any class) or a city Very High zone, the adopted rule will apply to you once it is effective. In a city High or Moderate zone it will not.
2. Walk your first five feet. The Zone 0 self-assessment takes about twenty minutes and tells you where you actually stand. Most homes need less than owners fear.
3. Know the fence rules before anyone quotes you. The regulation requires a five-foot noncombustible span where a fence attaches to the house, and noncombustible materials for new fences within five feet, though none of it is enforceable until the effective date. It does not require tearing out an existing wood fence, and repairs may still use wood. One caution on wording: the August 19 package published in the board binder is the pre-meeting deliberative draft, and no certified "as adopted" text has been published yet, so exact provision language is still pending. Details in our California Zone 0 fencing guide.
4. Mind the timeline. Fences on existing homes fall in Phase 2: three years in the Local Responsibility Area, extendable to five, and five in the State Responsibility Area. New construction complies from the effective date. There is no deadline running today, because that date does not exist yet.
5. Work the checklist. The Zone 0 checklist covers the five-foot zone item by item. If you make changes, document them; the Safer from Wildfires regulation already requires insurers to credit noncombustible fencing within five feet.

How often CAL FIRE inspects here

CAL FIRE has 810 parcels in Los Angeles County in its defensible space inspection program in July 2026, the month the dashboard is currently reporting. Of the 763 inspected, 437 were compliant, which is 57 percent. 21 properties have already been found non-compliant more than once.

Two things this does not tell you. These counts cover inspections by CAL FIRE and Contract Counties inside the State Responsibility Area only, so work done by local fire agencies in the Local Responsibility Area is absent entirely. And none of these inspections is checking Zone 0: they are inspections against the defensible space rules in force today, which reach from the structure out to one hundred feet and contain no ember-resistant zone requirement. See the full inspection figures and what they mean, read from CAL FIRE's public dashboard on August 23, 2026.

Not the county you were looking for? See every jurisdiction we can prove has a rule in force, and ask us to add yours.