The National Park Service requires a contractor to replace shingle roofs on four buildings and install vents on multiple buildings at Fort Cronkhite in Marin County, California. The work includes installing red three-tab asphalt shingles over a synthetic vapor barrier with copper flashings and drip edge, and recycling all removed materials. The contractor must provide all labor, equipment, and permits, with performance at the Golden Gate National Recreation Area. This is a total small business set-aside under NAICS 238160, with a firm-fixed-price contract awarded based on best value considering price, experience, schedule, license, and past performance. The solicitation will be available electronically around June 4, 2026, and closes 30 days after issuance.