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San Diego, CA Environmental Rules: Defensible Space (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified May 2026

Key Facts

State law
PRC §4291
Distance
100 feet around structures
Zones
0, 1, and 2 graded fuel
SD inspector
SDFD Brush Management
Hot zones
Tierrasanta, Mira Mesa hills

Summary

California Public Resources Code §4291 requires 100 feet of defensible space around structures in wildland fire areas. San Diego enforces this in Tierrasanta, Mira Mesa hillsides, Rancho Penasquitos, and other very-high fire hazard zones.

Proper brush management helps reduce wildfire risks in San Diego's Fire Hazard Severity Zones. Homeowners or responsible person(s) are responsible for creating and maintaining defensible space around all habitable structures on their property in the City's Very High Fire Severity Zones. NEW! As of February 28, 2026, all new structures in Very High Fire Severity Zones in San Diego must follow Zone 0 guidelines outlined in California Assembly Bill 3074 (AB 3074). Current home and property owners will need to take steps to meet Zone 0 by February 28, 2027. [...] California Civil Code 1102.19(a) established that, as of July 1, 2021, when you sell property that is located in a high or very high fire hazard severity zone you'll need documentation of a compliant Defensible Space Inspection (DSI) that complies with Section 4291 of the Public Resources Code or local vegetation management ordinances (SDMC 142.0412). [...] San Diego Municipal Code 44.0108 states: "No person shall place or deposit, or cause to be placed or deposited, any garbage, dead animals, or any animal or vegetable matter, or any putrid or decaying matter of any kind, at any place within the corporate limits of the said City of San Diego, without burying the same in trenches at least six feet deep and covering the same with no less than two feet of soil."

Source: PRC §4291 and SDFD Brush ManagementView official code

Full Breakdown

Under PRC §4291, owners of structures in or adjacent to State Responsibility Areas and Local Responsibility Area very-high fire hazard severity zones must clear flammable vegetation up to 100 feet from each structure. Zone 0 is a five-foot ember-resistant area kept free of mulch, vegetation, and combustible materials. Zone 1, from five to thirty feet, requires lean and clean landscape with horizontal and vertical separation. Zone 2, from thirty to one hundred feet, requires reduced fuel and removal of dead vegetation. San Diego Fire-Rescue conducts annual brush inspections in Tierrasanta, Mira Mesa, Rancho Penasquitos, Scripps Ranch, and other canyon-adjacent neighborhoods, issuing notices of correction.

Violations & Fines

Failure to comply triggers warning notices, abatement by city contractor at owner expense, administrative liens, and misdemeanor charges under Health and Safety Code §13007. Insurance companies may also non-renew policies for properties without compliant clearance.

Frequently Asked Questions

What is Zone 0 ember-resistant clearance?
Zone 0 is the five-foot non-combustible buffer immediately surrounding a structure. It must remain free of bark mulch, plants, fences, and stored items so wind-driven embers cannot ignite materials touching the building.
Who pays if the city abates the brush?
The property owner. SDFD or its contractor performs the work and bills costs to the parcel, becoming a tax lien if unpaid. Repeat non-compliance may also trigger misdemeanor citation.

Sources & Official References

Other rules in San Diego

All San Diego rules

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Defensible Space in Nearby Cities

How other cities in San Diego County handle defensible space.

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