The District of Columbia (“District”) Department of General Services (the “Department” or “DGS”), on behalf of District of Columbia Public Schools (“DCPS”), is issuing this Request for Proposals (“RFP”) to solicit design-build proposals (“Proposal(s)”) from offerors (“Offeror(s)”) interested in serving as the design-builder (the “Design-Builder” or the “Contractor”) for an addition at Wheatley Education Campus Early Childhood Education Center (“Wheatley EC”) located at 129