COLUMBIA, MD. — Feldman Bergin Properties, in a joint venture with Fortified Property Group, has acquired Columbia Business Center, a nine-building mixed-use complex in Columbia, for $25.6 million. Don Schline of MacKenzie Commercial Real Estate Services arranged the transaction on behalf of the seller, an institutional investor. The single-story portfolio located along Dobbin Road includes 106,255 square feet of office, laboratory, research and development and retail space. The portfolio was 84 percent leased at the time of sale to tenants including Chiron Technology Services, DSM Nutritional Products, the Motor Vehicle Administration, Sherwin-Williams and Sushi King. The new owners plan to immediately execute a capital improvement program, including exterior cosmetic renovations and modernized amenities. David Fritz, Spence Daw and Ryan Minnehan of NAI KLNB will handle Columbia Business Center’s leasing assignment, and MacKenzie Commercial Real Estate Services will manage the property.