Create Zone 0 ember-resistant area within 5 feet of your home

Establish a noncombustible zone extending 5 feet from all structures using gravel, stone, or concrete hardscape. Zone 0 is the most critical defensible space — over 90% of homes lost to wildfire ignite from embers landing on or near the structure, not from direct flame contact.

Why It Works

Wind-driven embers travel up to a mile ahead of a fire front and accumulate in corners, against walls, and under decks. A noncombustible perimeter eliminates fuel where embers are most likely to ignite the home. Cal Fire and NFPA Firewise research shows Zone 0 hardening is the single highest-impact action for home survival.

Steps

1. Remove all vegetation within 5 feet of the house, including foundation plantings, mulch, and dead leaves
2. Replace organic mulch with gravel or decorite rock (3/4-inch crushed stone works well)
3. Move firewood, lumber, and propane tanks at least 30 feet from structures
4. Screen attic vents, eave vents, and foundation vents with 1/8-inch metal mesh to block ember entry

Tips

• Gravel costs $30-$50 per cubic yard — a typical home perimeter needs 3-5 cubic yards
• Ember-resistant vent screens ($5-$15 per vent) are the cheapest and most effective structural upgrade
• Remove patio furniture cushions and doormats during red flag warnings
• Clean gutters of leaves and pine needles — gutters are a primary ember ignition point