GSA seeks expressions of interest from owners or authorized representatives for a fully serviced office lease in Sun Prairie, Wisconsin, within a specified delineated area. Offered space must be 2,000–2,280 ABOA sq ft on the ground floor, include 4 reserved surface parking spaces, support 850 lbs floor load, provide outdoor water spigot access, and operate 6AM–6PM. The lease has a 15-year full term with a 10-year firm term, and the space must meet government fire safety, accessibility, seismic, sustainability, and floodplain requirements, with offerors advised to review Section 889 telecom prohibitions. Estimated timelines include a market survey in November/December 2026 and occupancy in April 2028. Expressions of interest must include building/address details, authorized representative contact information, ABOA and rentable square footage, full-service rental and operating costs, and written owner consent if submitted by a representative.