Keller Williams Realty is an American international real estate franchise with headquarters in Austin, Texas. Founded in 1983 by Gary Keller and Joe Williams, it grew from a single office in Austin to approximately 700 offices with over 150,000 associates worldwide. It is the largest real estate franchise by agent count in the World, and one of the largest privately held global residential real estate brokerages. It is an Inc. 5000 company and has been recognized as one of the highest rated real estate companies by numerous publications, including Entrepreneur Magazine and Forbes.