Flood Zones: Brentwood vs Concord
How do flood zones rules compare between Brentwood, CA and Concord, CA?
Concord has fewer restrictions than Brentwood.
Brentwood, CA
Contra Costa County
Portions of Brentwood lie within FEMA-designated Special Flood Hazard Areas (SFHAs), particularly along Marsh Creek, Sand Creek, Dry Creek, and Deer Creek corridors. Development in these zones requires a floodplain development permit, elevation certificate, and compliance with the city's floodplain management ordinance.
View full Brentwood rules →Concord, CA
Contra Costa County
Portions of Concord along Walnut Creek, Pine Creek, and Galindo Creek lie in FEMA-designated Special Flood Hazard Areas (AE zones). The City participates in the National Flood Insurance Program and enforces floodplain construction standards under CMC Chapter 18.170.
View full Concord rules →Key Facts Comparison
| Fact | Brentwood | Concord |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
Brentwood FAQ
Concord FAQ
How do I know if my Concord property is in a flood zone?
Check the FEMA Map Service Center at msc.fema.gov by address, or ask the Concord Building Division for a flood-zone determination. Zones A and AE are Special Flood Hazard Areas.
Do I need flood insurance in Concord?
Federally backed mortgages require flood insurance for properties in SFHA (Zones A, AE). Properties outside SFHA may still benefit from affordable Preferred Risk Policies.
Can I remodel my home in a flood zone?
Yes, but if the remodel exceeds 50% of the structure's market value, it is a substantial improvement and triggers full floodplain compliance, including elevation above BFE.
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