Brush Clearance: Antioch vs Brentwood
How do brush clearance rules compare between Antioch, CA and Brentwood, CA?
Antioch has fewer restrictions than Brentwood.
Antioch, CA
Contra Costa County
California Public Resources Code 4291 requires 100 feet of defensible space around structures in fire hazard areas. Antioch's hillside and open-space fringe parcels (especially near Black Diamond Mines and Deer Valley) fall within CAL FIRE-mapped moderate and high Fire Hazard Severity Zones where clearance is mandatory.
View full Antioch rules →Brentwood, CA
Contra Costa County
California Public Resources Code Section 4291 requires 100 feet of defensible space around structures in State Responsibility Areas and in any CAL FIRE mapped fire hazard severity zone. Portions of eastern Brentwood abutting Mount Diablo foothills and Marsh Creek are mapped, and ECCFPD inspects compliance before fire season each year.
View full Brentwood rules →Key Facts Comparison
| Fact | Antioch | Brentwood |
|---|---|---|
| State law | PRC 4291 (100-ft clearance) | - |
| Zone 1 | 0-30 ft - lean, clean, green | - |
| Zone 2 | 30-100 ft - reduced fuel | - |
| Inspector | Contra Costa County FPD | - |
| Non-compliance | City abatement + lien on property | - |
| - | - |
Highlighted rows indicate differences between cities.
Antioch FAQ
Is my Antioch property in a Fire Hazard Severity Zone?
Check the CAL FIRE FHSZ viewer at osfm.fire.ca.gov. Hillside lots on the city's southern and eastern edges are most likely to be mapped High or Very High FHSZ.
What if my 100-foot zone crosses my property line?
PRC 4291 requires you to clear what you legally can on your own property and coordinate with neighbors. You cannot enter or clear a neighbor's land without permission.
Brentwood FAQ
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