FAYETTEVILLE, N.C. — StoutCap, a real estate investment firm specializing in raising capital from passive investors, has closed on its $9.2 million acquisition of Treetop Apartments in Fayetteville. The seller was not disclosed. The buyer plans to renovate the interiors of all 146 apartments, as well as upgrade the property’s amenities and exteriors. Treetop is situated on 10.4 acres and features a pool, lounge area, onsite laundry facilities, picnic area with grills and onsite property management and maintenance. StoutCap expects the value-add acquisition to double the return for investors in six years. The buyer plans to return 100 percent of capital to its investors in three years.