Department of Development Support
and Environmental Management

What We Do

Development Support and Environmental Management (DSEM) is a group of divisions and programs within Leon County which provide one-stop permitting, review and approval of land development activities.  The primary mission of DSEM is to ensure the continued vitality of the County, including both the built and natural environments, by promoting awareness and compliance with the Board's adopted growth management regulations.

DSEM's offices are located on the second floor of the Renaissance Center at 435 N. Macomb Street.  For general information, or if you are unsure which division you need to contact with your questions, please click the "citizens connect" button above.   


Electronic Application Submittal Process (ProjectDox)

Leon County accepts and reviews applications electronically through ProjectDox, an electronic plan review program. Electronic submissions for a building permit application, site and development plan application or an environmental management permit application are accepted, but may have requisite requirements. Find out how to make an electronic submission.

About us

Vision and Mission

To support the development of a sustainable community and its built environment, while protecting and preserving our natural resources to maintain the quality of life for all citizens and building positive relationships through exceptional customer service.

Services We Offer

DSEM is comprised of five divisions that encompass all areas of building, development review and land use, environmental review and compliance, code compliance and administrative support services for all aspects of building, land use and development projects located in the unincorporated County.


Contact us

Development Support and Environmental Management
435 N. Macomb Street
Tallahassee, FL 32301

Tel: +1 850 606 1300
Fax: +1 850 606 1301