Fire · Glossary
100-Foot Defensible Space
Updated 2026-07-20
California often requires up to 100 feet of defensible space (or to the property line) around structures in designated fire areas, with zone-based fuel treatments.
What it means
California often requires up to 100 feet of defensible space (or to the property line) around structures in designated fire areas, with zone-based fuel treatments.
Why it matters for land decisions
Confirm how the concept applies to your specific parcel with the city or county planning department and the controlling agency map or ordinance.
- Treat online GIS as a first-pass screen.
- Verify before design, escrow, or lending decisions.
People also ask
What is 100-Foot Defensible Space?
California often requires up to 100 feet of defensible space (or to the property line) around structures in designated fire areas, with zone-based fuel treatments.
Is a GIS overlay enough to decide?
No. Public GIS is a screening tool. Official determinations come from the governing agency, recorded documents, and licensed professionals when required.
Official sources
Related terms
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