Founded in 1929 by Staunton Elsea, Real Estate One began in Detroit and grew into a Michigan-based family of brokerage brands and affiliate businesses. The company focuses on residential brokerage and offers related services including mortgage, title, insurance, relocation, property management, and real estate education. The company operates a Michigan-wide one-stop-shop model supported by a wide agent network and numerous offices, with affiliation to Leading Real Estate Companies of the World for broader reach. Real Estate One ranks among Michigan's largest residential brokerages, and the company completed an acquisition in 2025 that expanded the family of companies further across the state.