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20 Harbor IslandNewport Beach, CA 92660
This landmark Newport Beach Harbor Island home, situated on two of its most extraordinary view lots, is available for sale for the first time in over 70 years. Favored for its timeless classic style, impressive private dockage, magnificent stately grounds, and beautifully manicured specimen trees, this gracious residence, built circa 1937, presides over Newport Harbor’s central turning basin and anchorage, the hub of the harbor’s yachting activity. This offering comprises two independent lots (numbers 20 and 21), each fifty feet wide. Their combined one hundred feet of frontage, found on the most desirable island in Newport Harbor, represents the last opportunity of its kind. Surrounded by Southern California’s most impressive and expensive waterside residences, this property can be restored, expanded, or wholly reimagined to build the waterfront home of your dreams. The existing private dock can accommodate several boats to 78’, and reconfiguration could allow for a yacht to 100’. Lot 21 can be purchased separately for $29,500,000.
| a month ago | Listing first seen on site | |
| a month ago | Listing updated with changes from the MLS® |
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Property Details for 20 Harbor Island
This 6-bedroom, 5-bath single-family home sits in the Harbor Island neighborhood of Newport Beach in Orange County. It offers 3,600 square feet of living space and is listed at $59,000,000, about $16,389 per square foot. The home was built in 1937. The MLS record lists the assessor parcel number as 050-230-29. Highlights include harbor and bay views, a fireplace, an attached two-car garage, and a 0.41-acre lot. The detail sections on this page cover interior and exterior features, estimated taxes, HOA dues where they apply, and the map location.
Property History
20 Harbor Island was relisted on August 7, 2026 at $59,000,000.
About Newport Beach
Set along the Pacific in Orange County, Newport Beach surrounds Newport Harbor, where Balboa Island, Lido Isle, and the Balboa Peninsula frame one of California's largest recreational harbors. The city stretches from the Balboa and Newport piers to Corona del Mar and Fashion Island, within the Newport-Mesa Unified School District.
In Newport Beach, 118 single-family homes have closed in the last 90 days at a median of $4,312,500, based on recorded MLS closings. The median was 31 days on market before going under contract.
Estimated monthly payment
6.71% · 30-yr fixedEstimate only, not a loan offer or quote. Principal and interest use the Freddie Mac 30-year fixed average of 6.71% (week of Sep 3, 2026); your rate will differ. A loan this size is typically a jumbo loan, which prices differently. Tax and insurance are modelled, not billed amounts; tax uses a typical Newport Beach rate, excluding Mello-Roos. Verify all figures. Full assumptions and disclosures.
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Photos of 20 Harbor Island, Newport Beach
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Also for sale in Newport Beach: 12 Harbor Island, 8 Beacon Bay, 87 Linda, 500 Harbor Island Drive.
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