Real Estate One provides assistance with the selling, purchasing and leasing processes of residential and commercial properties. The Michigan-based firm also provides competitive mortgage interest rates, insurance policies and relocation assistance. Its mortgage services division specializes in owner-occupied, second and vacation home financing, as well as special financing program for transferees. In addition, Real Estate One provides information on neighborhoods, day care facilities, restaurants and schools. Established in 1929 by Staunton Elsea, it was the first company to have multiple offices, to create homes books, to create a computerized MLS and to host open houses. With an annual income of more than $3 billion, Real Estate One is one of the largest brokers in the United States. Real Estate One maintains a location in Shelby Township, Mich.