Related Properties is a real estate development company that specializes in luxury apartment sales and rentals. The corporate headquarters are in Manhattan, but the Westchester office is located in the Centre at Purchase business park. The group has more than 15 properties to choose from in New York City alone including the Westminster, One Union Square South and Tribeca Tower. The company also manages residences in Boston, Los Angeles and San Francisco. You can call or visit the Web site for more information.