Engineering - Floodplain Management & Permitting

Engineering - Floodplain Management & Permitting

Dallas County Unincorporated Area - Development Permit

Application / Process and Subdivision Regulations

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Dallas County Development Permit Application Form
Dallas County Floodplain Management Regulations Court Order
Dallas County Subdivision Regulations Court Order

Development Activities (residential or non-residential construction/installation, grading/filling, development, floodplain, on site sewerage facility/OSSF, sand & gravel operations, etc.) in the Unincorporated Areas of Dallas County will need a permit.  

Oversize/Overweight Permit Requirements for Dallas County Roads

This is a separate permit that must be applied for individually. Please contact Anthony Smith with Public Works GIS at 214-653-6444 for this type of permit.

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Dallas County Fire Code

The application file shall remain open for a period of one (1) year from the date received at Dallas County. The owner is required to complete and submit all documentation within that time frame. No development activity is authorized until the respective permits are approved and issued.

Dallas County Floodplain Management Regulations


Flood Insurance Rate Maps (FIRMs) and Flood Insurance Studies (FIS) have been created by the Federal Emergency Management Agency (FEMA) to show different degrees of flood risk for a community. Rates of risk help determine the cost of flood insurance. FEMA has provided Dallas County with FIRMs and FIS having an effective date of July 7, 2014. These maps are divided into a grid system known as panels

Please go to the following weblink below to locate, view, and print the Digital Flood Insurance Rate Maps (DFIRM) panel(s) of interest:

FEMA Flood Map Service Center (Dallas County, TX)

Flood Insurance Studies (FIS)

A Flood Insurance Study (FIS) is a compilation and presentation of flood risk data for specific watercourses, lakes, and coastal flood hazard areas within a community.  The FIS report contains detailed flood elevation data in flood profiles and data tables. Please go to the following weblink to locate, view, and print the FIS in Dallas County.

Dallas County FIS

Current FIRM panels and FIS reports may also be viewed at Dallas County Map Repository located at the following address:

Dallas County Public Works Department
411 Elm Street, 4th Floor
Dallas, Texas 75202-3375
Tel:  214-653-6392
Fax: 214-653-6445

Contact Lissa Shepard, P.E., C.F.M., Senior Bridge Engineer and Floodplain Manager, 214-653-7426, or

Email:, should you have any technical questions.

FEMA has published Preliminary Revised FIRM and FIS for portions of Dallas County.  The 90-day appeal period for these maps began at the end of June 2017 and will continue through the end of September.  The panels are dated December 11, 2015 and may be viewed at or at the map repository at the Dallas County Public Works Department (address listed above).

NFIP Program questions may be directed to:

Federal Emergency Management Agency
FRC 800 North Loop 288
Denton, Texas 76209-3698
Attn: Consultation Coordination Officer
Tel: 940-898-5225