Massey Knakal Realty Services has completed two sales totaling $4.23 million. The deals include: * The $2.5 million sale of a 10,000 s/f warehouse at 149 33rd St. in the Greenwood Heights section. The 100' x 100' property contains 10,000 s/f of air rights in addition to the warehouse. The warehouse has 13-foot high ceilings and a recently installed rubber roof. It also has two separate loading areas - one loading bay with ground level access and the other, a loading dock. The property was sold to a Manhattan user. Massey Knakal broker Lawrence Sarn exclusively represented the seller. Massey Knakal was the sole broker. * The $1.73 million sale of a mixed-use corner building at 314 Carroll St. in the Carroll Gardens section. The four-story, 5,814 s/f property contains a store, a vacant loft, six apartments (five rent stabilized, one vacant) and a three-car garage. Massey Knakal sold this property back in 2004 for $1.05 million. Massey Knakal broker Ken Freeman represented the seller. Massey Knakal and Mina Pecorella of Century 21 Calabrese Realty were the brokers.