Harbour Island Real Estate
Harbour Island Listings Summary
Harbour Island - Town vs. County Stats
Avg Price in Harbour Island: $875,000 / County Avg $1,492,800
Avg Sq. Ft. in Harbour Island: 2,164 / County Avg 2,243
Avg Price per/sqft in Harbour Island:$404 / County Avg $666
Avg Year Built in Harbour Island: 1988 / County Avg 1983
Avg Days on Website in Harbour Island: 33 / County Avg 112
Based on information from California Regional Multiple Listing Service, Inc. as of September 9, 2026 3:13 AM 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.