Related Companies is a privately held real estate development and management firm founded in 1972 by Stephen M. Ross with affordable housing as its initial focus. Headquartered at 30 Hudson Yards in New York City, the company has evolved into one of the United States' most prominent private real estate developers with over $70 billion in assets owned or under development. The firm's portfolio encompasses mixed-use, residential, retail, office, and affordable housing developments in gateway markets. Related owns and manages 38 luxury rental buildings containing over 18,800 apartments, nearly 38.5 million square feet of commercial space, over 9,000 luxury condominium residences, and approximately 60,000 affordable housing units throughout the United States. The company is the largest private owner and preserver of affordable housing in the country. Major developments include the 28-acre Hudson Yards neighborhood on Manhattan's West Side, Deutsche Bank Center at Columbus Circle, The Grand LA in Los Angeles, and The 78 in Chicago. Related operates offices in New York, Boston, Chicago, Los Angeles, San Francisco, Washington D.C., and London. The firm maintains vertically integrated capabilities across development, acquisition, management, finance, marketing, and construction.