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What the ember-resistant zone rules mean for this unincorporated mountain community, under the actual designation and the actual fire authority.
The local snapshot
Wrightwood sits in the Swarthout Valley on the county's western mountain edge, a community of about 4,500 people served by the San Bernardino County Fire Protection District and mapped Very High. This page leads with what helps, and it tells the community's defining test exactly as it happened: in 2016 the whole town was ordered out, and the town held. Statewide Zone 0 is Proposed — not in force; the first five feet is Recommended now.
The local record
In August 2016 the Blue Cut Fire ignited in the Cajon Pass above Devore and ran with a speed veteran firefighters called extraordinary, ultimately putting more than 82,000 people under evacuation orders. Wrightwood's order covered the entire community, all 4,500 residents, though famously only about half left. The fire climbed Lone Pine Canyon, the backroad corridor from Lytle Creek toward town, and destroyed 105 homes and over 200 outbuildings, with losses concentrated in Swarthout Canyon, the West Cajon Valley, Lytle Creek, and the canyon country below. Wrightwood itself was defended and came through. The honest reading of that outcome is both gratitude and assignment: the corridor that carried the fire to the town's edge is still there, and the preparation each household controls, the ember-resistant ring, the hardened openings, is what a defended town looks like before the engines arrive.
Who enforces it
The San Bernardino County Fire Protection District is the Authority Having Jurisdiction here. Ordinance 4489 (June 10, 2025) adopted LRA Fire Hazard Severity Zone maps; that is a map adoption, not a Zone 0 ordinance. Statewide Zone 0 is Proposed — not in force. Existing defensible-space law still applies. Deadlines pages carry local status labels, not a 2027 to 2028 statewide clock; your jurisdiction sets the specifics, and this page names yours. For the requirements themselves, start with the regulations guide, fences and gates, and landscaping.
Questions
Yes. The community is unincorporated territory mapped Very High under the San Bernardino County Fire Protection District. Existing defensible-space law still applies. Statewide Zone 0 is Proposed — not in force. The first five feet is Recommended now.
The town itself was defended and came through; the fire's 105 destroyed homes and 200+ outbuildings were concentrated in the canyon corridor below, in Swarthout Canyon, Lone Pine Canyon, Lytle Creek, and the West Cajon Valley. The entire community of 4,500 was under evacuation orders.
County fire's defensible-space guidance, mountain fire-safe programs, and state grant channels as cycles open. The assistance page and an address check are the practical starting points, and the cheapest fixes (the woodpile, needle litter, the fence tie-in) come first.
Grant programs and free defensible-space guidance exist for mountain communities. Verify current openings through official channels before spending.
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