Mount San Antonio (mtsa) Real Estate
21350 Casino Ridge
$4,200,000
21350 Casino Ridge
$4,200,000
21350 Casino Ridge
$4200000
Mount San Antonio (mtsa) Listings Summary
Mount San Antonio (mtsa) - Town vs. County Stats
Avg Price in Mount San Antonio (mtsa): $4,200,000 / County Avg $2,291,500
Avg Sq. Ft. in Mount San Antonio (mtsa): 5,546 / County Avg 2,219
Avg Price per/sqft in Mount San Antonio (mtsa):$757 / County Avg $1033
Avg Year Built in Mount San Antonio (mtsa): 2004 / County Avg 1984
Avg Days on Website in Mount San Antonio (mtsa): 4 / County Avg 106
Based on information from California Regional Multiple Listing Service, Inc. as of September 28, 2026 8:36 PM UTC 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.