The General Services Administration (GSA) is seeking qualified construction firms for a Design-Bid-Build (DBB) project focused on replacing windows at Building 25 of the Denver Federal Center in Lakewood, Colorado. The project aims to enhance energy efficiency by replacing approximately 4,000 to 6,000 square feet of existing window units with a minimum of a 3-pane system that incorporates Low Embodied Carbon materials, as mandated by the Inflation Reduction Act. Building 25 serves as a significant office and laboratory space, and the successful contractor will need to demonstrate experience in curtain wall and window replacement, while also providing a capability statement detailing relevant past projects and strategies to minimize construction disruption. The estimated construction cost ranges from $5 million to $10 million, with responses due by October 3, 2024, and contract awards anticipated in October 2025. Interested firms can contact Jamie Potter at jamie.potter@gsa.gov or by phone at 303-588-9153 for further information.