Related Companies | 132,599 followers on LinkedIn. Related Companies is a global real estate and lifestyle company defined by innovation and the most prominent privately-owned real estate firm in the United States. Formed 50 years ago, Related is one of the largest private owners and preservationists of affordable housing in the U.S. and a fully-integrated, highly diversified industry leader with experience in virtually every aspect of development, acquisition, management, finance, marketing, and sales. Headquartered in New York City, Related has offices and major developments in Boston, Chicago, Los Angeles, San Francisco, Washington, D.C., Abu Dhabi and London, and boasts a team of approximately 4,000 professionals.