Over 21 years, DESA has been providing services to business and government agencies. Based in Columbia, S.C., the company is a certified small business and holds certifications as a Small Disadvantaged Business (SDB), a Disadvantaged Business Enterprise (DBE) and Woman-Owned Business (WOB). It is a professional services firm and is a service provider that serves both the private and public sectors. The company also offers services to a wide range of county and municipal clients and school districts. Some of the clients it caters to include the U.S. Department of Defense, the Centers for Disease Control, BellSouth, Barton Malow Company and Gilbane Inc.