Redfin is a real estate brokerage that uses technology to make buying and selling homes more efficient. The company's website and mobile apps allow users to search for homes, schedule tours, and make offers online. Redfin also offers a range of services to help buyers and sellers navigate the real estate process, including home inspections, title and escrow services, and mortgage lending. Redfin was founded in 2004 and is headquartered in Seattle, Washington. The company went public in 2017 and is listed on the NASDAQ stock exchange under the ticker symbol RDFN.