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Respect. Integrity. Client Satisfaction. Excellence.

Duplantis Design Group’s philosophy is simple — maximize employee potential, and it will lead to maximized customer satisfaction. In order to achieve this goal we have provided a challenging work environment that fosters a sense of accountability into each employee. This in turn fuels the passion that has driven us to become the leader in our industry and enables us to maintain long-term relationships with our clients.

Duplantis Design Group, PC (DDG) was founded in 1997 by David L. Duplantis, P.E.  Beginning as a small, local civil engineering firm, David believed that exceeding every client’s expectations was the only way to achieve long-term success. This philosophy and a company-wide commitment has grown DDG into a multi-disciplinary regional firm that offers civil engineering, coastal engineering, structural engineering, architectural, landscape architecture, and land surveying services from five company locations. The DDG corporate office is located in Thibodaux, Louisiana with branch offices in Covington, Baton Rouge, Lafayette, and Houston.