Downtown Design Services Inc., began operations as an Oklahoma corporation in 1999 for the purpose of providing the following ... Services to the Oil and Gas, Fiber Optic, Energy Industries, as well as, Municipalities, Local Governments and Utility Companies. -Mechanical and Electrical Drafting and Design -Professional Land Survey -Geospatial Services -PSM Documentation -GIS and Mapping -Data Collection -Project Management DDSI’s ownership has over twenty (20) years experience in providing these services to satisfied clients, ten of these years running DDSI. DDSI is a Better Business Bureau Accredited Business, a member of the Tulsa Metro Chamber of Commerce, and is an ISNetworld Registered Contractor. Mission Statement Our commitment is to provide our clients with a high quality consulting services in a timely, cost effective manner, meeting our clients’ goals and objectives. Integrity, honesty, professionalism and commitment to successful project completion are our top priorities. read more