 Circle Floor expanded into floor tiles, acoustical ceilings, and drywall construction and won contracts to install flooring in several New York landmarks including Rockefeller Center, the United Nations Building, and both John F Kennedy Airport and LaGuardia Airport.Milstein launched the family's first real estate development projects in the 1950s in partnership with his brother Seymour.Their companies, Milstein Brothers (MB) Real Estate and Milford Management, manage the organization's residential and commercial space.