NEW YORK CITY — Brax Realty has brokered the $4.7 million sale of a 15-unit apartment building in the Hell’s Kitchen neighborhood of Manhattan. Located at 340 W. 48th St., the property consists of 14 studio and a single one-bedroom apartment. Of the 15 units, six were vacant at the time of sale. Alan Stenson of Brax Realty represented the seller, 340 W. 48th Street LLC, in the transaction. The seller had owned the property for 44 years. The buyer was undisclosed.