Los Angeles, CA Environmental Rules: Flood Zones (2026)
FEMA flood zone rules in Los Angeles, CA, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.
Key Facts
- Flood hazard map authority
- FEMA Flood Insurance Rate Map (FIRM) + Flood Boundary and Floodway Map (FBFM)
- Base study reference
- "The Flood Insurance Study for The City of Los Angeles," dated June 2, 2012
- Adoption method
- Adopted by reference. FIRM and FBFM declared part of LAMC § 91.1612
- Governing LAMC section
- LAMC § 91.1612.3
- Enforcement agency
- Department of Building and Safety
Summary
Los Angeles adopts FEMA's Flood Insurance Rate Map and the 2012 Flood Insurance Study for the City of Los Angeles as its official flood hazard map for building code purposes.
91.1612.3. Establishment of Flood Hazard Areas. To establish flood hazard areas, the applicable governing authority shall adopt a flood hazard map and supporting data. The flood hazard map shall include, at a minimum, areas of special flood hazard as identified by the Federal Emergency Management Agency in an engineering report entitled "The Flood Insurance Study for The City of Los Angeles", dated June 2, 2012, as amended or revised with the accompanying Flood Insurance Rate Map (FIRM) and Flood Boundary and Floodway Map (FBFM) and related supporting data along with any revisions thereto. The adopted flood hazard map and supporting data are hereby adopted by reference and declared to be part of this section.
Full Breakdown
LAMC § 91.1612.3 establishes flood hazard areas in the City of Los Angeles by adopting the FEMA flood hazard map and supporting data by reference, specifically the Flood Insurance Study for the City of Los Angeles dated June 2, 2012, together with the Flood Insurance Rate Map (FIRM) and Flood Boundary and Floodway Map (FBFM). This map, and any subsequent revisions, is declared part of the building code. Development in Special Flood Hazard Areas (SFHAs) identified on the FIRM must comply with both LAMC Chapter IX and FEMA/NFIP requirements. The underlying federal standard applies; local enforcement is through the Department of Building and Safety.
Violations & Fines
Construction in a Special Flood Hazard Area without the required elevation certificate or permits is a building code violation. The Building Official may deny permits or require remediation for non-conforming construction in the flood hazard zone.
Frequently Asked Questions
How does Los Angeles determine which properties are in a flood zone?
Do I need a special permit to build in a flood zone in Los Angeles?
Does Los Angeles have its own flood map or does it use federal maps?
Sources & Official References
Other rules in Los Angeles
California rules heatmap·Compare Los Angeles to another location·View the California environmental rules overview
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Flood Zones in Nearby Cities
How other cities in Los Angeles County handle flood zones.