Coldwell Banker Realty and Guaranteed Rate Affinity, LLC share common ownership and because of this relationship the brokerage may receive a financial or other benefit. You are not required to use Guaranteed Rate Affinity, LLC as a condition of purchase or sale of any real estate. Operating in the state of New York as GR Affinity, LLC in lieu of the legal name Guaranteed Rate Affinity, LLC. Coldwell Banker Realty can help you find San Francisco homes for sale, rentals and open houses.