Founded in 1983, Keller Williams Realty Inc. is an international real estate company with more than 600 offices located across the United States and Canada. The company began franchising in 1991, and following years of phenomenal growth and success, became the largest U.S. residential real estate firm in North America by agent count in 2013. The company has succeeded by treating its associates as partners and shares its knowledge, policy control and company profits on a system-wide basis.