Parrish DeVaughn, PLLC has purchased an office building located at 3601 North Classen Boulevard consisting of 19,764 square feet from Concept Ventures, L.L.C. for $1,600,000. The property will be utilized as an investment. David Hartnack, Sam Swanson and Micalyn Wheelwright with NAI Sullivan Group provided brokerage services to the Seller and Bob Sullivan, CCIM with NAI Sullivan Group provided brokerage services to the Buyer. Closing was held at Oklahoma City Abstract and Title Company by Teresa Koeppe.