
How We Build Defensible Space
Wildfire mitigation is zone-by-zone fuel reduction within the Home Ignition Zone, the 0–100 foot area around structures where most wildfire home losses originate. The work starts at the foundation and moves outward.
- Zone 0 (0–5 feet from the structure): Remove all vegetation and combustible mulch. Replace bark with gravel, pavers, or river rock. Clear dead leaves and debris from roof, gutters, and under decks. Move firewood, propane tanks, and stored materials out of this zone.
- Zone 1 (5–30 feet): Prune tree branches at least six feet from the ground. Remove ladder fuels, the shrubs and brush growing under tree canopies that let fire climb into the crown. Thin dense plantings so shrubs and trees do not touch. Clear dead vegetation, fallen branches, and leaf litter. Keep grass mowed to four inches or less.
- Zone 2 (30–100 feet): Thin overgrown patches of trees and shrubs. Remove dead, dying, and suppressed trees. Create horizontal spacing between tree crowns, at least ten feet on flat ground, more on slopes. Clear accumulated debris and down wood. Maintain fuel breaks along driveways and access routes.


