The median home value in Cardiff By The Sea, CA is $2,461,000. The national median home value is $338,100. The average price of homes sold in Cardiff By The Sea, CA is $2,461,000. Cardiff By The Sea real estate listings include condos, townhomes, and single family homes for sale. Commercial properties are also available. If you see a property you’re interested in, contact a Cardiff By The Sea real estate agent to arrange a tour today!