This is a pre-solicitation notice for a future firm-fixed-price construction contract to fully repair and modernize the HVAC system and Direct Digital Controls at Building 09690, Joint Base Lewis-McChord, WA. The work includes demolishing existing rooftop units, installing high-efficiency units and energy recovery ventilators, new ductwork, and a BACnet-compliant DDC system integrated with the existing Tridium Niagara N4 Supervisor, all while the facility remains occupied. The estimated construction magnitude is between $5,000,000 and $10,000,000. Competition will be limited to Service-Disabled Veteran-Owned Small Business (SDVOSB) concerns with NAICS 236220. The formal RFP will be posted on SAM.gov, and proposals will be evaluated using the highest technically rated with a fair and reasonable price approach.