Brush Clearance: Brentwood vs Oakley
How do brush clearance rules compare between Brentwood, CA and Oakley, CA?
Oakley has fewer restrictions than Brentwood.
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 →Oakley, CA
Contra Costa County
Properties in Oakley's grassland and Delta-adjacent areas may be required to maintain defensible space under CA Public Resources Code §4291. Zone 1 (0–30 ft from structures): remove dead vegetation and maintain fire-resistant plants. Zone 2 (30–100 ft): reduce fuel density. East Contra Costa Fire Protection District may conduct annual inspections of at-risk properties.
View full Oakley rules →Key Facts Comparison
| Fact | Brentwood | Oakley |
|---|---|---|
| - | - | |
| Zone 1 (0–30 ft) | - | Remove dead vegetation — lean/clean/green |
| Zone 2 (30–100 ft) | - | Reduce shrub and tree density |
| State Law | - | CA Public Resources Code §4291 |
| Fire District | - | East Contra Costa Fire Protection District |
Highlighted rows indicate differences between cities.
Brentwood FAQ
Oakley FAQ
How much clearance do I need?
100 feet of defensible space if in a fire hazard zone. Two zones with different requirements.
Who inspects?
Oakley fire department or CAL FIRE conducts annual inspections in fire hazard areas.
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