Is Zone 0 Required in Hidden Hills?
Which fire hazard zone is your Hidden Hills property in?
Enter your address to check it against the CAL FIRE Fire Hazard Severity Zone map. A map result tells you the hazard zone, not whether a Zone 0 rule applies to your parcel.
Behind the gates, embers do not check in
Wind-blown embers can travel well ahead of a fire front. They land in mulch beds, shavings piles, hay storage, and wood fencing pressed against a wall. That is how ember-driven fires take structures: from the ground up, in the first five feet.
Hidden Hills learned this the hard way in November 2018, when the Woolsey Fire jumped the 101 Freeway and the entire city was ordered to evacuate, horses included. The gates that keep the city private do not keep embers out.
Hidden Hills lots also carry more structures than a typical suburban parcel: house, barn, stable, tack room, corral shelters. On an equestrian lot, the first five feet of the barn matters as much as the first five feet of the house.
Read the Hidden Hills Woolsey storyWhat is required now, what is proposed, what is recommended
Three labels, used the same way on every page: Required now · Proposed — not in force · Recommended now.
Existing state law
PRC §4291 and Gov. Code §51182 still apply: keep roofs and gutters clear of leaves and needles, and remove branches within 10 feet of a chimney outlet. The county's defensible-space page lists chimney clearance as required.
Statewide Zone 0
The Board of Forestry approved a draft on August 19, 2026, but OAL file 2026-0828-03E is listed as withdrawn on September 8, 2026. There is no statewide effective date.
No local Zone 0 ordinance identified
As of September 19, 2026 we have not identified one. Our check covered the county's program page, the city's site, and targeted searches. It was not a review of the city's full municipal code.
Harden the first five feet
Clear combustibles, choose noncombustible ground cover, and fit ember-resistant vents on the house and the barn. The county's page also recommends a 100-foot defensible-space radius.
Who is the fire authority in Hidden Hills?
Hidden Hills is an incorporated city. The Los Angeles County Fire Department's Defensible Space program covers Hidden Hills, according to the county's list of covered cities. The county's page lists chimney clearance as required and a 100-foot defensible-space radius as a recommendation. It does not present Zone 0 as a requirement.
We have not identified a local Zone 0 ordinance for Hidden Hills. Local rules can be adopted separately from the state, so confirm with LA County Fire and the city before acting on any deadline.
Quick answers for Hidden Hills homeowners
Is Zone 0 required in Hidden Hills?
Not by any local ordinance we have identified. As of September 19, 2026 we have not identified a local Zone 0 ordinance for Hidden Hills, and no statewide Zone 0 regulation is in force. Existing defensible-space law (PRC §4291 and Gov. Code §51182) still applies. Confirm with LA County Fire and the city before acting on any deadline.
Is Zone 0 a statewide law in California?
As of September 19, 2026 there is no statewide Zone 0 regulation in force. AB 3074 directed the state to create an ember-resistant zone. The Board of Forestry approved a draft on August 19, 2026, but OAL file 2026-0828-03E is listed as withdrawn on September 8, 2026, and there is no statewide effective date.
Who is the fire authority in Hidden Hills?
The Los Angeles County Fire Department. Its Defensible Space program covers Hidden Hills, according to the county's list of covered cities. The county's page lists chimney clearance as required and a 100-foot defensible-space radius as a recommendation.
Is there a Zone 0 deadline for Hidden Hills?
None that we have identified. There is no statewide effective date, and we have not identified a local Zone 0 ordinance for Hidden Hills as of September 19, 2026. The dated status is on our deadlines page.
Should the barn and stable get the same treatment as the house?
Recommended now, not required. The first five feet of a barn is where hay, shavings, mulch, and wood fencing can carry embers to the wall. Clearing it and fitting ember-resistant vents is effective prevention whether or not a Zone 0 rule ever applies.
Is my white three-rail fence banned?
Not by any rule we have identified. We have not identified a local Zone 0 ordinance that bans fencing in Hidden Hills, and no statewide regulation is in force. Recommended now: where a fence meets the house or the barn, a noncombustible gate or panel in the last five feet breaks the path a burning fence would carry to the wall.
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