Napa County
Defensible Space & Weed Abatement in Napa
Bring your property up to CAL FIRE standard — and keep your insurance.
Wildfire fuel reduction to CAL FIRE's defensible-space standards. California's PRC 4291 requires 100 feet of defensible space around structures in wildland areas — we clear and limb to those Zone 0, 1, and 2 specs. Across Napa County — from Napa, St. Helena, Calistoga, and Yountville — two kinds of jobs are common here: vineyard owners clearing and prepping new blocks, and homeowners and wineries investing in fire mitigation and defensible space after repeated catastrophic fires.
Defensible Space & Weed Abatement Pricing
What defensible space costs in Napa
Local terrain, slope, and site access in Napa all move the final number — steep or hard-to-reach parcels run higher than the ranges above.
Local context
Why Napa landowners need defensible space
Napa was hit hard by the 2017 Atlas Fire and the 2020 Glass Fire, which tore through hillside neighborhoods and wineries — the memory keeps defensible-space and fuel-break work a top priority across the valley's wooded edges.
Local operators
Pros serving Napa
Defensible Space & Land Clearing Systems
Local operator
Licensed Timber Operator specializing in defensible space clearing, forestry mastication, brush mulching, and hand-crew cutting across the North Bay. Owner has 25+ years as a wildland firefighter.
Serves: Sonoma · Napa · Marin · Solano
Johnston General Engineering
Local operator
Napa engineering contractor specializing in excavating, grading, and utilities — including land clearing, building pads, driveway widening, drainage, and defensible space.
Serves: Napa · Sonoma
SRT Forestry
15+ yrs · CSLB #1096455
Santa Rosa contractor focused on defensible space and fire prevention: brush clearing, ladder-fuel reduction, tree thinning, and stump grinding across Sonoma, with select Napa and Marin work. ISA Certified Arborist, TCIA-accredited.
Serves: Sonoma · Napa · Marin
Pacific Tree Care
43+ yrs · CSLB #672522
Calistoga tree care company (since 1983) serving Napa County: fire mitigation and brush clearing, defensible-space creation, wildfire risk assessment, tree removal, and stump grinding. ISA and TCIA affiliated.
Serves: Napa
A-1 Forestry Group
30+ yrs
Forestry-mulching division of A-1 Tree Service (30+ years): mastication, fuels reduction, fire-break construction, defensible space, and burn-zone restoration with CAL FIRE-qualified crews across the North Bay.
Serves: Napa · Sonoma · Solano · Marin
Gonzalez's Tree Service
25+ yrs
Family-owned tree service (since 2001) serving Marin, Sonoma, and Napa — Novato and San Rafael included — with tree removal, pruning, and stump grinding.
Serves: Marin · Sonoma · Napa
A&E Arborists Tree Care
Local operator
ISA-certified arborists and CAL FIRE Licensed Timber Operators doing land clearing, mastication, fire-fuel reduction, stump grinding, and excavation across Napa and Solano.
Serves: Napa · Solano
JLS Environmental Services, Inc.
24+ yrs · CSLB #812780
Vegetation-management firm (since 2002) offering forestry mulching, brush mastication, CAL FIRE-compliant defensible space, lot clearing, erosion control, and right-of-way clearing across the North Bay.
Serves: Solano · Napa · Sonoma
Common questions
Defensible Space & Weed Abatement FAQs
How much defensible space does California require?+
Public Resources Code 4291 requires 100 feet of defensible space around structures in State Responsibility Areas and most wildland zones — or to your property line if it's closer. That 100 feet is split into Zone 0 (0–5 ft, ember-resistant), Zone 1 (5–30 ft, lean/clean/green), and Zone 2 (30–100 ft, reduced fuel).
Why is my insurer asking for this?+
After repeated catastrophic wildfire seasons, many carriers now condition renewal in the Bay Area WUI on documented defensible space, and some have non-renewed policies outright in high-risk areas. Bringing your property to PRC 4291 standard — and keeping photos and an invoice — is increasingly what it takes to stay insurable.
What does Zone 0 actually mean?+
Zone 0 is the critical 0–5 feet right around your home, and it should be ember-resistant: no combustible bark mulch, no firewood stacks, no flammable shrubs touching the siding, and ideally hardscape or bare mineral soil. Embers landing in this zone are the leading way homes ignite, so it gets the strictest treatment.
What will it cost for my place?+
A typical one-acre home runs roughly $1,000–$4,000 for full 100-foot defensible space. Crews often price by the hour ($100–$250) or by the acre for Zone 2 brush ($100–$500+). Steep terrain, heavy fuel loads, and lots of close-in hand work around structures push costs up.
Can a machine do all of it?+
Not the close-in zones. A mulcher is ideal for thinning Zone 2 brush quickly, but Zone 0 and Zone 1 around the house, decks, fences, and landscaping need careful hand work to protect structures and keepers. The best results come from combining both.
Defensible Space & Weed Abatement in other counties
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