With more than 30 years experience, the team at THD Design Group provides Engineering Design, Land Surveying and Construction Management for both the public and private sectors. Our expertise, combined with state-of-the-art technology, provides each project with increased efficiency and accuracy.

Serving the Greater St. Louis Metro Area


Our comprehensive Engineering Services include all expertise and technology necessary to execute a project from preliminary design, mapping and ultimately to the final design stage when the project is ready for bid and construction. Then, we provide construction support through plan clarification and contractor and field surveyor coordination. Our Engineering staff has provided economical and efficient designs for numerous projects, ranging from single family residential, large commercial and industrial developments and municipal projects.

Land Surveying

Our Surveying Department is diversified in all aspects of land surveying. Our staff has extensive experience in numerous projects, which include horizontal and vertical control for topographical surveys, SRPR’s, ALTA surveys, Boundary Surveys, Record Plats, and construction stakeout. We perform this work with the most current survey equipment. Our experienced field crews are equipped and trained in the use of robotic total stations, which utilizes state-of-the-art data collection. This capability combined with proficient office support staff and AutoCAD technology provides the most efficient and cost saving transfer of data between the field personnel, office staff and the client.

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Construction Management

Our Construction Management experience allows us to provide value engineering services at the beginning of a project and effectively manage critical issues throughout construction. We do this while keeping scheduling, cost and quality in mind. We have provided construction management for major public infrastructure projects and residential, commercial and industrial developments. Our extensive construction management and engineering experience gives us an acute eye for detecting design errors and for identifying innovative solutions that save you time and money.