History

DDG began as a small civil engineering firm. In almost two decades, it has grown into a professional firm that has successfully completed many local projects that have literally built our communities, as well as projects for Fortune 500 companies.

Duplantis Design Group (DDG) was founded in 1997 by David Duplantis. Beginning as a small, local civil engineering firm, David believed that exceeding every client’s expectations was the only way to realize long term success. This philosophy and a fierce, companywide commitment to following it — grew DDG into a multi-disciplinary regional firm offering professional design services from six company locations. DDG corporate office is located in Thibodaux, Louisiana, with branch offices in Covington, Houma and Baton Rouge, Louisiana, as well as Houston and Dallas, Texas.