Seller Nuveen Real Estate had acquired the Class A asset in mid-2011 for nearly $120 million. : Unico Properties has acquired the 365,674-square-foot Westlake Tower in downtown Seattle. The seller, Nuveen Real Estate, traded the Class A office asset for $236 million, according to The Seattle Times. CBRE secured financing on behalf of the buyer and represented the seller. The property last changed hands in 2011, when GGP sold it to Nuveen for $119.4 million, per data from Yardi Matrix. The sale is the latest in a number of major transactions closed in Seattle.