Redfin Corp. is a technology-powered residential real estate brokerage, which engages in buying and selling homes. It operates through the following segments: Real Estate, Properties and Other. The Real Estate segment revenue is derived from commissions and fees charged on real estate services transactions. The Properties segment revenue is earned when the Company sells homes that it previously bought directly from homeowners. The Other segment revenue includes fees earned from mortgage banking services, title settlement services, Walk Score data services and advertising. The company was founded by David Selinger, David Eraker, and Michael Dougherty in 2004 and is headquartered in Seattle, WA.