Long & Foster Real Estate, Inc., is the largest privately owned residential real estate company in the United States. The company is part of The Long & Foster Companies, which also includes Prosperity Home Mortgage, LLC, Long & Foster Insurance and Long & Foster Settlement Services. Long & Foster Real Estate is the exclusive affiliate for Christie's International Real Estate throughout select parts of the Mid-Atlantic and Northeast, and it is a founding affiliate of Leading Real Estate Companies of the World, a prestigious global network of real estate professionals that includes the Luxury Portfolio International division.