509 Onderdonk Avenue VACANT FREE-MARKET well maintained, mixed-use building located on the Ridgewood/Bushwick border. Investment deal with redevelopment potential with approximately 2, 150 SF of air rights available. Two stories high. The building currently features three free-market, 2 bed/1 bath apartments and one retail unit. All units will be delivered vacant. The property is nestled on a quiet street, only 6 blocks from the M train at Seneca Ave and 10 blocks from the L train at Dekalb Ave. The building is 2, 849 SF and measures 25' x 55.' The property sits on a 2, 500 SF lot measuring 25' x 100.'