Build your defensible space before fire season
Annual · typically April–May
Why it matters
The science of home loss is unglamorous: embers land in dry leaves against the house, in gutters, in bark mulch, and slip through attic vents. Defensible space works from the house outward — the first 5 feet matter more than the last 50.
What skipping it costs
$10,000–$500,000
Homes don't usually ignite from the wall of flame you see on the news — they ignite from embers landing in dry gutter litter, mulch beds, and unscreened vents, sometimes an hour after the fire front passed. Defensible space is why one house on a street stands and the neighbor's doesn't. Insurers know it too: in high-risk areas, documented clearance is increasingly the difference between renewing your policy and losing it.
Two ways to get it done
Do it yourself
You'll need: Rake, Loppers, Gloves, Ladder for gutter check, Trash bags or green-waste bin, 1/8-inch metal mesh for vent screening (~$15 a roll), Optional: gravel or stone for the first 5 feet at the foundation.
- Zone 0 (0–5 feet from the house): this zone should not burn. Rake out bark mulch and dead leaves against the foundation; swap to gravel or stone if you can. No firewood, no brooms, no doormats that catch embers, nothing combustible under the deck.
- Gutters and roof: clear every scrap of leaf litter. An ember in a dirty gutter is the classic ignition story.
- Vents: screen attic, soffit, and crawlspace vents with 1/8-inch metal mesh — embers ride the wind straight through standard bug screen.
- Zone 1 (5–30 feet): limb trees up 6–10 feet, break up continuous shrubs (no "fire ladders" from grass to shrub to canopy), keep grass short and watered or cut brown.
- Zone 2 (30–100 feet, if your lot goes that far): thin so tree crowns don't touch; clear heavy dead-and-down fuel.
- Photograph the finished work — for your insurer, on purpose.
Hire it out
$300–$1,200National fair range — local labor moves this number.
A defensible-space crew visit runs $300–$1200 depending on lot size and how overgrown things got — limbing, spacing, hauling. The chainsaw-and-chipper portion is honestly worth hiring; the Zone 0 work is a rake and your own two hands.
Ask whether they work to the actual zone standards (your state forestry or fire agency publishes them — many run free inspections that double as a to-do list). And the hauling question matters: a slash pile drying next to your house until fall is worse than the brush was.
Ask the tech
- Are you working to the Zone 0/1/2 defensible-space standard, or just 'cleaning up the yard'?
- What's your plan for the first 5 feet — because that zone is about materials, not just trimming.
- Do you haul the slash away, or does it sit in a pile drying out on my property until 'later'?
Red flags you're being upsold
- Crews selling whole-tree removal on fear when the standard asks for limbing, spacing, and litter cleanup at a fraction of the cost.
- Post-fire-season door-knockers with a chipper and a 'today only' price — the defensible-space version of the roofing storm-chaser.
- Anyone spraying 'fire retardant' treatments on your landscaping as a paid service. Long-term retardant landscape sprays are not a substitute for clearance, and mostly retard your bank account.
Second opinion time: Any quote over $2,500, or any quote where most of the money is tree removal — get an ISA-certified arborist's read on which trees actually need to go.
The call
DIY the raking, litter, and screening over a weekend; hire the chainsaw work. Do it in April — by August everyone with a chipper is booked and charging accordingly.