Defensible space: the foundation of wildfire prevention
Defensible space reduces ignition potential and fire intensity by managing fuel type, spacing, and continuity near structures.
Defensible space is a zoning approach—reduce ignition potential closest to the structure first.
Quick orientation
Start with the immediate zone, then work outward. Consistency beats one-time cleanups.
Use the checklist0–5 ft: Immediate Zone
Goal: lowest ignition potential right next to structures.
- Keep surfaces clear of leaf litter and seasonal debris
- Prevent combustible ground cover build-up near edges
- Maintain planting beds to avoid dry material accumulation
5–30 ft: Intermediate Zone
Goal: interrupt continuity and reduce ladder fuels.
- Separate shrubs from low branches
- Break up continuous plantings with spacing and hard breaks
- Remove deadwood and dense understory where it creates vertical paths
30–100 ft: Extended Zone
Goal: reduce intensity and improve access.
- Thin overcrowded stands and remove dead/dying vegetation
- Break continuous fuel beds—especially on slopes
- Maintain access routes for safe egress and response
Next step
Use the checklist for quick wins, then request an assessment for sequencing.