Greystone is a real estate lending, investment, and advisory company. The company was founded in 1988 and has since grown to have over 500 employees. Greystone provides a range of services including lending, investment, and advisory services for real estate projects. The company has a focus on affordable housing and has been involved in the financing of over 200,000 affordable housing units. Greystone has offices in New York, Los Angeles, and other locations throughout the United States.