Zillow Group, Inc. is a Seattle-based online real estate company. The company was founded in 2006 by Rich Barton and Lloyd Frink. Zillow provides a range of real estate services, including buying and selling homes, renting homes, and mortgage financing. The company operates in the United States and Canada. Zillow is one of the largest online real estate companies in the United States. The company has been recognized as one of the World's Most Innovative Companies by Fast Company.