Founded in 1968, Long & Foster Real Estate has grown from a single real estate office in Fairfax, Va., to one of the largest privately owned real estate companies in the United States. The firm is a subsidiary of The Long & Foster Companies, which also includes the Mid-States Title Insurance Agency, Long & Foster Insurance Agency and Prosperity Mortgage Company. Long & Foster Real Estate operates more than 250 sales offices throughout Maryland, Virginia, Washington, D.C., Delaware, Pennsylvania, West Virginia, New Jersey and North Carolina. The firm offers a variety of property-related services to its clients. It employs more than 17,000 sales agents to work individually with buyers and sellers. The firm provides sales, purchasing, rental and financing services for residential and commercial real estate. Long & Foster Real Estate offers information related to various aspects of residential properties, such as price ranges, locations and number of bedrooms in different kinds of houses. The firm has an office in Rehoboth Beach, Del.