Defensible Space Reference

Zone-based defensible space practice (CALFIRE / NFPA by name only).

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Formula and source

(reference page; no compute) Zone 0 / 1 / 2 wildland-urban-interface defensible-space actions per CALFIRE 2022 guidance and NFPA 1144 (Standard for Reducing Structure Ignition Hazards from Wildland Fire).

CALFIRE 2022 'Defensible Space' guidance by name; NFPA 1144 by name. IBHS Wildfire Prepared Home program by name.

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