The Architect of the Capitol in Washington, DC intends to issue a single-award IDIQ task-order contract for construction repair, alterations, and renovation services, primarily Mechanical/HVAC, supporting Capitol Complex facilities management. The contract will have an estimated ceiling of $250,000,000, one base year, and nine one-year optional ordering periods, with individual task orders negotiated as firm-fixed-price. The solicitation will be issued in two steps, with Step One around late September 2026 and Step Two around November/December 2026. Work may include MEP/HVAC and related tasks such as air handling/load modifications, recording studio ventilation, and building heating replacement, with task orders possibly concurrent or consecutive. Offerors must be registered in SAM before award and should monitor SAM.gov for the RFP and amendments; AOC is a legislative branch entity using FAR Part 15 best-value procedures for this procurement.