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280 280 Summerford Cir
San Ramon, CA
Search New Castle, California Real Estate Listings & New Homes for Sale in New Castle, CA. Find New Castle Houses, Townhouses, Condos, & Properties for Sale at Weichert.com
(Data as of 2/21/2026)
Information deemed reliable but not guaranteed.
The data relating to real estate on this web site comes in part from the Internet Data Exchange (IDX) Program of California Regional Multiple Listing Service, Inc. Real estate listings held by firms other than Weichert Realtors are marked with Listing Broker’s Firm Name.
Based on information from California Regional Multiple Listing Service, Inc. as of 2/22/2026. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.