Civil Design Advantage (CDA) is a multi-discipline Civil Engineering and Surveying firm located in the Des Moines, Iowa metropolitan area. CDA provides professional engineering, planning, landscape architecture, construction observation, LEED AP® and surveying services throughout the central United States. CDA has Professionals licensed in Iowa, Missouri, Kansas, Minnesota and Illinois. CDA utilizes the latest technology with GPS survey, 3D Design, Green Technologies and GPS guided grade control for construction