Y--Rehabilitate Buildings at Boston National Historic

The National Park Service, Northeast Region, is soliciting proposals under solicitation number 140P4326R0021 for the rehabilitation of four historic buildings at Boston National Historical Park in Charlestown, Massachusetts, within the Charlestown Navy Yard. This firm-fixed price contract is a total small business set-aside, exclusively reserved for small businesses as defined by the NAICS code 236220 with a size standard of $45 million, and requires all offerors to possess a current Unique Entity ID and maintain an active registration in SAM.gov with completed online representations and certifications. The base requirement encompasses the rehabilitation of Charlestown Building 1, while three optional scopes include Charlestown Building 124, the USS Constitution Museum, and the Commandants House, each with detailed statements of work and specifications provided in attachments. The work involves hazardous materials abatement, structural stabilization, masonry and roofing repairs, electrical infrastructure upgrades, and historic window and door rehabilitation, all performed in accordance with preservation standards. All labor must comply with Davis-Bacon wage rates as outlined in Attachment 9, and contractors must adhere to the limitation on subcontracting requirements detailed in Attachment 10. A mandatory site visit is scheduled for June 4, 2026, at 10:00 a.m. EDT at the USS Constitution Museum adjacent to Dry Dock 1, with no parking available on-site; attendance is strongly encouraged to fully understand site conditions impacting project cost and execution. Proposals must be submitted by the deadline of August 4, 2026, and the estimated contract value ranges between $1 million and $5 million. Executive Order 14398 implementation is required, and all work is to be conducted within the designated place of performance in Boston, Massachusetts, zip code 02129.