Colin Rowen, director of The Rowen Group for GFI Realty Services, has completed the sale of 1667 and 1690 Clay Ave. The property was sold to Chad Kurland, senior managing director of Titan Capital for $3.8 million. The seller, the Gershnov family, sold the property as part of a reverse 1031 exchange. The two five-story walkup buildings consist of 43 apartments and two retail stores.  The properties are located just six blocks east of the Grand Concourse and within close walking distance to major transportation including the  BX-41 bus and D and B subways.