NEW YORK CITY — NAI Global has brokered the sale of a five-story garage building in New York City for $29.5 million. The 40,000-square-foot building is located at 318 E. 48th St. It was purchased by the Government of the Republic of Singapore, which plans to convert the building into an office building that will house its Mission to the United Nations and Consulate offices. The government is currently located at 231 W. 51st St. Gil Robinov of NAI's New York City office represented the buyer. David Noonan of Newmark Knight Frank represented the seller, Chapman Consulting Group.