County guide

Zone 0 in Ventura County: what applies where

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

Two sets of rules, and only one is in force today

In most of California, "Zone 0 is already required here" is a false claim. In Ventura County it is partly true, provided you are precise about who requires it, and for which buildings. As of August 19, 2026:

In force now: the Ventura County Fire Protection District (VCFPD) adopted Zone 0 through its 2025 Wildland-Urban Interface Code (Ordinance 34). Per the district: "Effective March 1, 2025, VCFD has implemented a full 5-foot Non-Combustible Zone 0 for New Buildings and Additions to Existing Buildings." The code also covers "installation of new landscape, and refurbishment of existing landscape areas," and the district's Standard 515 notes it has had Zone 0 requirements for new buildings since April 1, 2019.

Adopted, not yet in effect: the statewide regulation, the one that will add fence and gate requirements for existing homes once it takes effect. The Board of Forestry approved it on August 19, 2026. The package still has to clear the Office of Administrative Law, a review that includes a five-day public comment period, and be published by the Secretary of State, so no statewide compliance clock is running yet. Board staff said they would submit it as an emergency rulemaking package under the provisions of AB 1455 (2025) and expected it could become effective as early as September 2026. Our timeline and enforcement guide covers how the phase-in will work. The district's code anticipates the handoff, printing an advisory notice that "Any State regulation more restrictive than this ordinance... shall apply."

Where the statewide rule will reach in this county

The statewide regulation covers two kinds of territory: all of the State Responsibility Area (SRA, land where the state holds financial responsibility for wildfire protection), every hazard class included, and Very High Fire Hazard Severity Zones only in the Local Responsibility Area (LRA). A home in a High zone inside a city falls outside it; a home in a Moderate zone in the SRA falls inside. Our coverage explainer explains the distinction.

Ventura County has substantial SRA, with a wrinkle: it is one of California's six "Contract Counties," where per the 2023 Community Wildfire Protection Plan "SRA fire protection is provided by the counties under contract with CAL FIRE." Even in state-responsibility territory, the agency at your door is the Ventura County Fire Department. The SRA hazard maps took effect April 1, 2024; the district adopted the 2025 LRA maps by Ordinance 33, effective July 1, 2025. If a parcel spans two or more zones, the district applies the highest zone to the entire parcel.

Very High acreage, jurisdiction by jurisdiction

The Office of the State Fire Marshal's March 10, 2025 map release lists Very High acreage by jurisdiction, with the 2011 figures for comparison:

The headline is the unincorporated county, where Very High acreage jumped from 5,370 to 31,487. Ojai roughly tripled. Ventura, Oxnard, and Fillmore sit outside the district, running their own fire departments and adopting their own maps; the Ventura City Council adopted its map July 1, 2025, classifying more than 4,600 acres as High or Very High.

What the district's Zone 0 requires, and what it doesn't

The in-force rules are the 2025 VCWUIC and Standard 515, which describes Zone 0 as hardscape-only: "No plantings, vegetation, or combustible material of any kind are allowed in this zone. Install hardscape only: Rock, sand, decomposed granite (DG), dirt, pavers, concrete, etc."

For new buildings and additions, the code requires noncombustible fencing and gates in Zone 0, bans tree canopy within 10 feet, and prohibits combustible mulch, wood chips, and firewood. If you are building in the district, the fence question is settled; see our guide to noncombustible fence materials.

For existing buildings, the code lists restrictions that apply now: no combustible mulch or wood chips, no firewood, no vegetation underneath decks, no artificial grass, no new trees. Note what is not on that list: replacement of existing fences. That is the piece the state regulation will add once it takes effect. Standard 515 is explicit about when:

State regulations for Zone 0 are currently under development... that will affect EXISTING buildings within the applicable zones constructed prior to April 1, 2019. An anticipated 3-year phase in of these regulations will likely be implemented with full compliance, expected sometime in 2029.

VCFPD Standard 515, Defensible Space and Landscape Plan Submittal Requirements (revised effective January 1, 2026)

That squares with the adopted statewide regulation, under which fences on existing structures are a Phase 2 item: three years in the Local Responsibility Area, extendable to five, and five in the State Responsibility Area, both counted from an effective date that does not exist yet. Even then, the regulation does not require wholesale fence replacement. Existing combustible fences may remain and repairs may use combustible replacement materials. The noncombustible requirement lands on attached fences, full replacements, and new installations; details are in our fence requirements guide. One caveat on the fine print: the August 19 package posted in the board binder is the pre-meeting deliberative draft, and no certified "as adopted" text has been published yet, so treat provision-level wording as pending.

One more piece of county reality: on October 21, 2025, the Board of Supervisors unanimously passed a resolution (not an ordinance) urging the state to rethink its draft Zone 0 rules, restore local control, and fund implementation. Supervisor Jeff Gorell: "Sacramento's one-size-fits-all approach to maps and regulations ignores local realities." So the county's fire district enforces a Zone 0 code while its supervisors lobby Sacramento to soften the statewide version.

The district's fence rule is a building standard, and a building standard needs your city council's vote

There is a step between a fire district adopting a Zone 0 rule and that rule applying to your house, and we had not been describing it. We found it on August 24, 2026 in a City of Ojai resolution, and then in the statute the resolution cites.

Health and Safety Code section 13869.7(a) lets a fire protection district adopt building standards relating to fire and panic safety that are more stringent than the ones in the California Building Standards Code. Subdivision (c) then sets the price of that power, and the sentence is short:

"No ordinance adopted by the district shall be effective until ratification by the city, county, or city and county where the ordinance will apply."

California Health and Safety Code section 13869.7(c). The same subdivision lets the city "ratify, modify, or deny" and requires written reasons for a modification or denial.

So a district ordinance is not self-executing on incorporated land. Each city council in the district has to vote, and it may say no. Ventura County Fire Protection District adopted Ordinance 34 on October 14, 2025, repealing Ordinances 29 and 32 and adopting the 2025 California Fire Code and portions of the 2025 Wildland-Urban Interface Code with amendments. On October 28, 2025, the Ojai City Council passed Resolution 25-37, ratifying, "without modification," three specific pieces of Ordinance 34: Article 3 Section 903, Article 3 Appendix B, and Article 4 Section 604.11, effective inside Ojai after January 1, 2026.

Two things in that are worth slowing down for. The first is which pieces got ratified: only the ones the resolution describes as amendments to "building standards relating to fire and panic safety." A district's vegetation and defensible space maintenance duties are a different kind of provision and do not appear in the list. The second is that Section 604.11 is on the list, and 604.11 is the fencing section. In other words, the part of a district Zone 0 package that needs your city's vote is precisely the part about fences.

The district says the same thing in its own ordinance. We then read Ordinance 34 itself, in the packet Port Hueneme's council was given, and it writes the condition into its own text: "pursuant to subdivision (c) of Health and Safety Code Section 13869.7, the aforementioned provisions shall apply upon the effective date of this Ordinance or upon the date of said ratification or adoption by the County or any city, whichever is later." So this is not an inference we are drawing from a statute. It is the district's own drafting, and it tells you the operative date for your address is the later of two dates, one of which belongs to your city. Ordinance 34 was passed and adopted by the VCFPD Board of Directors on October 14, 2025, with Directors LaVere, Gorell, Lory, Parvin and Lopez all voting aye and none absent.

What Section 604.11 actually says, and how long it has been saying it

Everyone who writes about this county's Zone 0 rule describes it. We had not quoted it, so here it is from Ordinance 34 itself, all three parts:

"604.11.1 Scope. This section only applies to fences, including gates within the fencing, within 5 feet of Building(s), including Decks, (Zone 0) that are in the WUI area."

"604.11.2 New fencing. New fencing and gates installed on or after January 1, 2023, shall be constructed of a non-combustible material."

"604.11.3 Existing fencing. Fencing installed prior to January 1, 2023, may remain. Exception: The entire fencing not parallel and within 5 feet of the Building, including gates within the fencing, shall be constructed of a non-combustible material when any portion of the existing fencing within 5 feet is being replaced. Fencing beyond 5 feet from the Building is not required to be replaced with non-combustible material."

Ventura County Fire Protection District Ordinance No. 34, Article 4, Section 604.11, read from the copy attached to the City of Port Hueneme council agenda of November 17, 2025

Read the dates in it. Ordinance 34 was adopted in 2025, but its fence rule is written around January 1, 2023, which means the rule was carried forward from the previous code cycle rather than created in this one. Port Hueneme's staff report says so without ambiguity: the provisions in Section 604.11 "have been in effect within the Fire District since January 1, 2023 for properties located within designated wildland-urban interface areas." Ventura County's Zone 0 fence rule is three and a half years old.

One more requirement appears in that staff report and nowhere else we have looked. Health and Safety Code section 13869.7 does not only require a city's ratification; it requires the district to make written findings that local climatic, geological or topographical conditions justify a standard stricter than the state's, and to file them. The report states that those findings "were adopted by the Ventura County Fire Protection District's Board of Directors by Resolution on September 16, 2025," and that the city's Building Official is to file a copy with the California Department of Housing and Community Development and the California Building Standards Commission. That is a paper trail a homeowner can ask for.

What this changes about how you should read our register: the row for this district is a row about a district, and on incorporated land its building standards reach you only once your council has ratified them. Here is where each one stands, in the order of how solid our evidence is.

• Ojai: read in full. Resolution 25-37, passed October 28, 2025, ratifying without modification, effective inside Ojai after January 1, 2026.
• Unincorporated Ventura County: still unread, and we had the wrong document. Corrected August 29, 2026. We described Ventura County Resolution No. 25-116 as the county's own ratification. Reading Port Hueneme's staff report, it is not a ratification at all: it is the findings resolution that Health and Safety Code section 13869.7 requires the district to make about local climatic, geological and topographical conditions, adopted by the VCFPD Board of Directors on September 16, 2025. Resolution 25-116 is attached to that packet as a scanned image with no readable text layer. We have since read it from a different packet, Moorpark's, whose scan of the same document does carry a text layer; it is set out in full below. Whether the Board of Supervisors has separately ratified for the unincorporated county is still open.
• Port Hueneme: the council packet, not the adopted record. A staff report dated November 17, 2025 from the City Manager and Building Official recommends ratifying the same three pieces, and the draft resolution in the packet carries a November 17, 2025 adoption date and a clause taking effect January 1, 2026. But its resolution number is left blank, which is what a document looks like before the vote rather than after it. Almost certainly adopted; not something we will state as adopted until we see the numbered resolution.
• Simi Valley: read, numbered, still the packet. Added August 29, 2026. Resolution No. 2025-35, on the November 17, 2025 consent calendar as item 7(10), ratifying the same three pieces "without modification". Unlike Port Hueneme's, the number is filled in, and Resolution 2025-36 is independently reported as adopted that same night, which is suggestive but not proof. The city's own minutes are not published where we can reach them. So: better evidence than Port Hueneme, still short of the adopted record, and still not claimed as adopted.
• Moorpark: read, and its number is blank. Added August 29, 2026. Item 10.B of the December 3, 2025 regular meeting, headed "RESOLUTION NO. 2025-____". Same grade of evidence as Port Hueneme. It carries one detail the others do not: it rescinds Moorpark's own Resolution No. 2022-4145, which the text says "previously ratified" the earlier district ordinance.
• Ventura, Oxnard and Fillmore: outside the district entirely, running their own fire departments and adopting their own maps.

Port Hueneme is worth one extra sentence, because it is the case that shows this is procedure rather than hazard. Port Hueneme has no mapped fire hazard severity zones at all, and its council still took up the ratification, because ratification is how a district's building standards become enforceable on city land regardless of whether any parcel there is mapped. Its staff report puts the general rule plainly: section 13869.7 "authorizes the Fire District to adopt such standards but requires ratification by the legislative body where the standards will apply."

If you live in an incorporated city in this county, the question that decides whether the district's fence rule applies to you is not what the district adopted; it is whether your own council voted to ratify it, and when. That is a public record and your city clerk can tell you faster than we can.

We are also now carrying this as an open question against every fire district on our register, not just this one, because the statute is general. The open questions page lists which district rows we have and have not checked for ratification.

The findings that make the fence rule lawful, and what they do not say

Added August 29, 2026. Section 13869.7 does not let a fire district be stricter than the state because it wants to be. It has to make express findings that local climatic, geological or topographical conditions make the stricter standard reasonably necessary. For Ordinance 34 those findings are Resolution 25-116, adopted by the district's Board of Directors before the ordinance itself. We could not read it in Port Hueneme's packet, where it is a flat image. Moorpark's packet has the same pages scanned with a text layer.

It finds three things about Ventura County: that it has yearly periods of "high temperatures accompanied by low humidity and high winds… as well as periods of limited rainfall and droughts"; that it "is in a potential high activity seismic zone", where one earthquake can start several fires at once; and that its wildland and wildland-urban interface areas have topography that delays engines getting to structures. It then resolves:

"BE IT FURTHER RESOLVED that it is reasonably necessary because of these local climatic, geological, or topographical conditions to modify Sections 903 and Appendix B of the California Fire Code and 604.11 of the California Wildland-Urban Interface Code…"

Ventura County Fire Protection District Resolution No. 25-116, adopting express findings, read from the copy attached to the City of Moorpark council agenda of December 3, 2025

Now notice what is not in it. There is no finding about fences. Not one sentence addresses why a combustible fence within five feet of a house is a hazard, how fences carry fire to structures, or why five feet is the distance. The three paragraphs above are the entire justification, and they are the same three paragraphs justifying automatic sprinkler systems and fire flow requirements in the same resolution.

We are not going to overstate that. The findings are written for a package, not for one section, and the seismic paragraph is plainly aimed at water supply and sprinklers rather than at fencing. A general finding can lawfully support a specific standard. But it is worth knowing, if you are a homeowner in this county being told your fence is a fire risk as a matter of settled fact, that the document the statute requires as the basis for that rule never mentions fences at all.

The department did write down why, just not where the law required it

Added August 29, 2026. Above we note that Resolution 25-116, the findings the statute demands, never mentions fences. That is still true, and it would be unfair to leave it there, because the department has explained itself in its own words. It just did so in a different kind of document.

Ventura County Fire Department's Fire Prevention Bureau publishes Guideline 421, "Combustible Fencing in Defensible Space Zones." It reproduces Section 604.11 in full, which is a useful third source for text we had otherwise read only inside council packets, and then it gives the reasoning:

"Review of previous wildland fires, and newer laboratory testing, has shown that combustible fences are a contributing factor in fire spread to buildings. To help reduce the risk of ignition of fences and spread of fence fires to buildings, the Ventura County Fire Department has enacted requirements for new combustible fencing and retrofit of existing combustible fencing."

Ventura County Fire Department, Guideline 421, Combustible Fencing in Defensible Space Zones, revision dated January 1, 2026

It then points at where that testing lives: IBHS, the University of California's fire program, and the National Institute of Standards and Technology, including NIST's August 2022 work on residential fences and mulch beds. We cover that research separately. The dates line up in a way worth noticing: NIST published the fence-and-mulch study in August 2022, and this county's fence rule took effect on the first day of the January after it.

The guideline also carries a definition the ordinance does not:

"COMBUSTIBLE FENCING. Any fencing material or installation that is not IGNITION-RESITANT MATERIAL. Combustible fencing includes wood, plastic, and other petroleum based, fence materials"

Guideline 421. The misspelling of "ignition-resistant" is in the original.

That matters for a homeowner in a practical way, because it settles a question the fence trade argues about: a vinyl fence is combustible under this rule. Plastic is named.

And one line worth knowing if the rule does not reach your address: the department "highly recommends installation of non-combustible fencing and replacement of existing combustible fencing when located within 5 feet of a building" even where Section 604.11 does not apply. That is advice, not law, and the guideline says so itself.

Who actually adopted Ordinance 34, and why that matters for the unincorporated county

Both the Simi Valley and Moorpark staff reports describe the adoption the same way: "the Ventura County Board of Supervisors, acting as the Ventura County Fire Protection District board, approved Ordinance No. 34." The five directors we listed above are the five county supervisors, wearing a second hat.

That is worth pausing on, because section 13869.7(c) says a district ordinance is not effective "until ratification by the city, county, or city and county where the ordinance will apply." The supervisors adopting the ordinance as the district's board is one act. Ratifying it as the County, for unincorporated territory, would be another. We have not found a record of the second, and the document we once thought was it, Resolution 25-116, turns out to be the findings resolution instead. This is not us alleging a defect. It is us saying plainly that we cannot yet show the unincorporated county has done the thing the statute names, and we would rather say that than let the district row imply it.

Claims we could not verify

• "Ventura County passed a Zone 0 ordinance." Not as most people mean it. We found no Zone 0 ordinance from the Board of Supervisors. The adopted requirements are district instruments, Ordinance 34 (the 2025 VCWUIC) and Standard 515, and trade-press references to a "Ventura County Zone 0 ordinance" almost certainly mean these. The only supervisors' action we found is the October 2025 resolution pushing back on the state draft.
• "VCFD will apply Zone 0 to High zones, not just Very High." Asserted by an advocacy site; not confirmed on any district source we loaded. Standard 515's stated applicability is SRA zones, LRA Very High zones, VCFPD Hazardous Fire Areas, and "any property as determined by the Fire Department."
• "60,000 Ventura County properties will fall under the state Zone 0 rules." A local news headline we saw only as a search snippet; the article is paywalled. Treat the figure as unverified.
• "VCFD protects 353,370 acres of SRA." Appears on Wikipedia-style sources only; no primary source confirms it. Contract-county status itself is verified.

Inspections, brush clearance, and free help

The district's enforcement vehicle is the Fire Hazard Reduction Program (FHRP), its annual defensible-space and weed-abatement program. Notices to abate are mailed April 20 each year, and owners "are expected to maintain their property free of fire hazards or nuisance vegetation year round." Contact: [email protected], (805) 389-9759. The same program handles AB 38 defensible-space reports for home sales in High and Very High zones. The City of Ventura runs its own FHRP with a June 1 brush-management deadline.

For help before an inspector arrives, five fire safe councils serve the county: Ojai Valley, Bell Canyon, Oak Park, Ventu Park, and the Ventura Regional Fire Safe Council covering all other areas. Per the district, "Free Home Wildfire & Hardening Assessments are also provided by the Fire Safe Councils in locations prone to wildfires." The Ventura Regional council also runs chipping, Firewise USA, and resident grant programs. As in every county, most fuels-reduction grants pay for vegetation work, not hardscape or fencing; confirm scope with each program.

What this means for you

• Find your zone first. Use our address lookup walkthrough to see whether you are in the SRA, an LRA Very High zone, or neither. Remember: the highest zone on a split parcel applies to all of it.
• Building or adding on in the SRA, an LRA Very High zone, or a VCFPD Hazardous Fire Area? The noncombustible five-foot zone, fencing and gates included, applies now, and has in some form since 2019.
• Existing home in the SRA or a Very High zone? The district's in-force list already bars combustible mulch, firewood, and vegetation under decks in your first five feet. Fence requirements will arrive with the state rule once it takes effect; the district expects full compliance for older homes around 2029. You have runway; use it to plan rather than panic-buy. Run our Zone 0 self-assessment and work through the Zone 0 checklist.
• In Oxnard or Port Hueneme? The statewide regulation as adopted likely does not reach you: Oxnard has no Very High zones on the 2025 maps and Port Hueneme has none at all. Verify your own parcel anyway.
• The vote happened; now watch the OAL review. The Board approved the regulation on August 19, 2026, and the package goes next to the Office of Administrative Law for expedited review, including a five-day public comment period, before the Secretary of State publishes it. Nothing about the remaining timeline is guaranteed; the Board has missed deadlines before. The status tracker reflects changes as they happen, and our California Zone 0 fencing guide covers the fence rules in depth.

How often CAL FIRE inspects here

CAL FIRE has 842 parcels in Ventura County in its defensible space inspection program in July 2026, the month the dashboard is currently reporting. Of the 842 inspected, 737 were compliant, which is 88 percent. 92 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.