WILTON, CONN. — GHP Office Realty has completed the sale of an office and flex building located at 131 Danbury Road in Wilton. A Westchester County, Conn.-based real estate holding company purchased the property for $9.2 million. Omnicom Group and Enterprise Rent-A-Car occupy the 52,500-square-foot building. Elizabeth Smith of Goldberg Weprin Finkel Goldstein represented the seller, while Bill Anson of RM Friedland represented the buyer in the deal. GHP Office Realty, a division of Houlihan-Parnes Realtors, is a leading owner, operator and purchaser of suburban New York commercial space.