Floodplain Development Permits

To verify that development does not have a negative impact on areas with a 1% annual chance of flooding (100 - Year Floodplain), Bexar County Public Works must review all construction activities conducted on property that is in proximity to the 100-- Year Floodplain. A flood study conducted by a Professional Engineer may be required to determine the base flood elevation or to alter the floodplain limits.To obtain a Flood Development Permit please see the following:

1. Print and complete the Floodplain Development Permit Application (PDF).
2. Obtain the supporting material required to review the permit application.

   • FPDP Checklist Land Development (PDF)

   • FPDP Requirements for Structures (PDF) (includes property owners with floodplain on or adjacent to their property on public sewer) 
3. Submit application and fees ($50 per activity) to the Development Services Section of Public Works located at: