FEMA flood zone rules in Daly City, CA — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Daly City participates in the National Flood Insurance Program (NFIP) and adopts FEMA Flood Insurance Rate Maps (FIRMs) for San Mateo County. The city sits on coastal hills with no major riverine Special Flood Hazard Areas (SFHAs); the primary water-related hazards are coastal cliff erosion at Mussel Rock / Northridge and tsunami inundation along the Pacific shoreline rather than 100-year floodplains.
Floodplain management in Daly City is governed by FEMA's NFIP, the San Mateo County countywide FIRM panels, and the city's local floodplain-management chapter (typically under Title 12 Buildings and Construction or Title 15 Environmental Protection). New construction within any mapped Special Flood Hazard Area (SFHA - Zones A, AE, VE) must be elevated to or above the Base Flood Elevation (BFE) and meet California Building Code Appendix G / ASCE 24 requirements. Most of Daly City is mapped Zone X (areas outside the 0.2% annual chance floodplain) on the effective San Mateo County FIRMs. Coastal bluffs (Westlake / Northridge / Mussel Rock landslide complex) are not FEMA-mapped as flood hazard but are managed through the City's geologic hazard, grading, and landslide-mitigation provisions and through state seismic-hazard mapping. Tsunami inundation zones along the Pacific shoreline are mapped by the California Geological Survey and inform emergency planning, not NFIP elevation requirements.
Construction within an SFHA without a floodplain-development permit, or below BFE, violates the local floodplain ordinance and can trigger Section 1316 of the National Flood Insurance Act (denial of flood insurance to the structure). Penalties include stop-work orders and removal of non-compliant improvements. Owners can verify zone with a FEMA Elevation Certificate.
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Daly City, CA
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