SIOUX FALLS, S.D. — The Boulder Group has arranged the sale of a single-tenant property net leased to Shopko in Sioux Falls for $11.7 million. The 90,585-square-foot building is located at 1601 W. 41st St. The property is near big box retailers such as Walmart Supercenter, Target, Costco and Menards. There are over 17 years remaining on Shopko’s lease, which expires in December 2035. Randy Blankstein and Jimmy Goodman of The Boulder Group represented the seller, a Texas-based REIT. A local real estate investor purchased the asset.