The District of Columbia Department of General Services (“DGS” or the “Department”), is issuing this Request for Proposals (“RFP”) to solicit the services of an Architectural/Engineering (“A/E” or “Contractor”) firm to provide professional planning and design services to assist in the development of a master plan (the “Campus Site Master Plan”) and conceptual design documents (including preliminary cost estimate/budget,scope, and schedule documents) to support the future redevelopment of the Oak Hill Campus Site.