Y--MACA 258051 - Replace Seasonal Housing

The U.S. National Park Service is soliciting firm-fixed-price proposals for the construction of seasonal employee housing at Mammoth Cave National Park in Kentucky under solicitation number 140P2026R0048, with a submission deadline of July 22, 2026. This acquisition is a total small business set-aside under FAR 19.5, restricted to entities certified as small businesses with a NAICS code of 236116 and a size standard of $45 million in average annual receipts. The project requires the construction of two new two-story housing units and the demolition of three existing single-story units, along with associated site improvements including parking, utilities, earthwork, and hazardous material abatement. All work must comply with over 2,000 pages of detailed specifications, 128 pages of drawings, and a 57-page geotechnical report, with construction plans taking precedence over specifications in case of conflict. Offers must be submitted electronically via email in two separate volumes—one technical and one business/price—each adhering to strict file naming conventions and size limits of 38 MB per attachment and 100 MB per email. Proposals are evaluated using a best value continuum tradeoff process, where technical approach, project experience, schedule, key personnel experience, and past performance are collectively considered approximately equal in importance to price, with non-price factors ranked in descending order of importance. The winning contractor must manage compliance with federal regulations including FAR clauses on gratuities, anti-kickback procedures, contingent fee restrictions, and accelerated payments to small businesses, while also ensuring all materials are delivered and stored in original manufacturer packaging and conform to strict handling and waste disposal protocols. Performance must commence within 10 days of notice to proceed and be completed within 425 calendar days, with liquidated damages of $1,349 per day for delays. Contractors are required to perform at least 15% of the work using their own personnel and must submit a contractor quality control plan, daily reports, and qualified site supervisors. All invoices must be processed through the U.S. Treasury’s Invoice Processing Platform, with draft submissions to the Contracting Officer’s Representative seven days prior to final submission, and offerors must be actively registered in SAM.gov at the time of proposal submission. Options exist for additional structures including a second housing unit, a multi-purpose/storage building, and an open-air pavilion, which may be exercised unilater