| Government Affairs |
San Mateo County Flood Insurance Rate Map Zone Information
NOTICE TO LENDING INSTITUTIONS AND REAL ESTATE AND INSURANCE AGENTS REGARDING FLOOD INSURANCE RATE MAP ZONE INFORMATION
As a public service, the County of San Mateo will provide you with the following information upon request for properties within Unincorporated San Mateo County:
-
Whether a property is in or out of the Special Flood Hazard Area (SFHA) as shown on the current Flood Insurance Rate Map (FIRM) of the County.
-
Additional flood insurance data for a site, such as the FIRM zone and the base flood elevation or depth, if shown on the FIRM.
-
We have a handout on the flood insurance purchase requirement that can help people who need a mortgage or loan for a property in the SFHA.
-
The County of San Mateo maintains elevation certificates for new and substantially improved structures in the SFHA since July 26, 1995.
-
The County of San Mateo updates the Flood Insurance Rate Maps as needed when revisions are made to the maps.
-
The County also has information for special flood-related hazards and historical flood information, including Floodway Data and Tsunami Data.
More information about Flood Hazard Areas in Unincorporated County is available here: https://planning.smcgov.org/flood-hazard-resources.
If you would like to make an inquiry, you may reach us at (650) 599-7311 or drainage@smcgov.org. For specific properties, please include the street address and, if available, the Assessor's Parcel Number (APN). The Planning and Building Department is currently open to in-person visits by appointment from 8:00 am to 4:00 pm, Monday through Thursday at 455 County Center, 2nd Floor, Redwood City, CA 94063. Visit us online at https://planning.smcgov.org for more information.
The public can also find a property's current flood zone, land use zone, and other information using the Planning and Building Department's GIS Mapping tool, available at: https://gis.smcgov.org/apps/publicviewer.
