Flood Zones: Concord vs El Cerrito
How do flood zones rules compare between Concord, CA and El Cerrito, CA?
Concord has fewer restrictions than El Cerrito.
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 →El Cerrito, CA
Contra Costa County
Unincorporated Contra Costa County regulates floodplain development under Ordinance Code Chapter 914-14 to maintain FEMA National Flood Insurance Program (NFIP) participation. Significant AE flood zones affect Bethel Island, Bay Point, Rodeo, and delta shoreline areas.
View full El Cerrito rules →Key Facts Comparison
| Fact | Concord | El Cerrito |
|---|---|---|
| - | - | |
| Governing ordinance | - | CCC Ord. Chapter 914-14 |
| NFIP participation | - | Active — required for flood insurance |
| Key flood areas | - | Bethel Island, Bay Point, Rodeo, delta shoreline |
| Substantial improvement | - | ≥50% pre-improvement market value |
| Required elevation | - | Lowest floor at/above BFE |
Highlighted rows indicate differences between cities.
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.
El Cerrito FAQ
Is my property in a FEMA flood zone?
Check the FEMA Flood Map Service Center (msc.fema.gov) or the CCC online zoning/GIS viewer. Significant zones exist at Bethel Island, Bay Point, and along creeks. If in Zone AE/A/VE, elevation and flood insurance apply.
Do I need flood insurance?
If your property is in a Special Flood Hazard Area and you have a federally backed mortgage, flood insurance is required. Even outside SFHAs, coverage is recommended — roughly 25 percent of NFIP claims come from outside mapped zones.
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