Zone 0 and brush clearance in Alpine

Which rule applies in Alpine

Alpine is unincorporated San Diego County, so the City of San Diego's February 28, 2027 date does not apply. The statewide Zone 0 regulation applies on the Board of Forestry's timeline, and Public Resources Code 4291 already requires 100 feet of defensible space, inspected by the Alpine Fire Protection District and CAL FIRE.

Fire history

On July 6, 2018, the West Fire started along Interstate 8 near West Willows Road and ran into Alpine's neighborhoods on a hot, windy afternoon, burning roughly 500 acres and destroying 57 structures, most of them homes, before crews stopped it. Fifteen years earlier, the 2003 Cedar Fire had devastated the communities just to the west — Harbison Canyon and Crest lost hundreds of homes — and burned to Alpine's edge.

The West Fire is the one local homeowners talk about, because it showed how fast a small fire becomes a house fire when there is fuel against the structure. Several of the homes lost had brush, wood fences, or stored material within a few feet of the walls. That is the problem Zone 0 is written to fix.

The terrain, and what crews usually find

Alpine climbs from about 1,500 to over 2,500 feet along the I-8 corridor, with Viejas Mountain to the north, El Capitan and the Cleveland National Forest to the northeast, and steep canyons dropping toward the Sweetwater River to the south. The vegetation is dense chaparral with coast live oak in the drainages and, higher up, scattered pine. Lots range from suburban parcels near Alpine Boulevard to five and ten acres on the ridges, many with long, steep driveways.

Steepness is what drives the work here. Much of the Zone 2 thinning in Alpine cannot be done with a tractor; it is hand crews with chainsaws on slopes, hauling uphill. Zone 0 around the house is usually the easy part by comparison, but the same rural issues apply: woodpiles, propane, sheds, and wood decks over slopes with brush beneath them.

Common Zone 0 findings on Alpine lots

• Wood decks cantilevered over slopes with brush and stored items underneath
• Woodpiles and stored lumber against houses and outbuildings
• Oak and chaparral growing right up to the house on hillside lots
• Steep Zone 2 slopes that require hand crews rather than equipment
• Long, narrow driveways that need vegetation cut back for engine access
• Wood fences and gates attached to the house

What it costs in Alpine

Alpine is among the more expensive places in the county for brush work because of the slopes: hand-crew thinning of heavy chaparral on steep ground runs $4,000–$8,000 per acre or more, with moderate ground at $2,000–$4,000. Zone 0 around the house on a suburban Alpine lot is $1,000–$3,500. The Fire Safe Council's assistance program and the County's mitigation pilot have both funded work in Alpine. See the Zone 0 cost guide and the brush clearing cost guide for the full breakdown.

What to do

1. Confirm your parcel on the 2025 fire hazard map.
2. Walk the Zone 0 checklist and photograph everything.
3. Clear what you can yourself: stored items, bins, litter, gutters.
4. Request a free quote for the vegetation, hardscape, fence, and slope work. The state Zone 0 timeline applies; the 100-foot defensible space requirement is already in force.

Neighborhoods and areas covered