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As its address implies, One Harbor Island is a singularly magnificent residence on Newport Beach’s most prestigious private island. From its approximately 11,300 sqft lot with an impressive 134 feet of prime Bay frontage, this elegant estate enjoys the region’s best water views, with sweeping vistas of Newport Harbor’s main Turning Basin. Designed by renowned architect CJ Light, the home spans approximately 4,500 sqft with 4 bedrooms, 4 bathrooms and 2 half-baths finished in the finest materials - from African Anigre hardwood to Portuguese limestone, to Venetian plaster and rich leather. One Harbor Island revels in breathtaking views throughout its spacious, light-filled rooms, including the main level great room with multiple venues for living, dining, and media viewing and a wall of glass that opens completely to expansive rear grounds with tiered limestone terraces and emerald green lawns rolling gently to the water’s edge. This outdoor space also includes a sparkling waterfront pool and spa, a built-in BBQ area, and a private dock to accommodate two 60-foot yachts and two smaller boats. Other highlights include a grand waterfront master suite with spa bath, a professional-grade gourmet kitchen, state-of-the-art technology and a finished, 3-car garage.
Listing agent: Kathryn White DRE #01346645 kwhite@homgroup.com, Listing office: HOM Sotheby's International Re
MLS data updated 11/2/2026, 4:18:56 AM PT
Source: CRMLS, MLS #: NP14018964
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Jun 12, 2015
Prices use the left axis; mortgage rates use the right. Hover, tap, or focus the chart and use the arrow keys. Red SOLD badges mark recorded sales.
This home · nearest recorded event
No recordNo property-price record in this range.ZIP 92660 · Nov 2026
No monthly averageAt least 3 eligible sales in this month are required.30-year fixed mortgage benchmark
No weekly rateNo published rate within 7 days of this date.No recorded sales in this range. Select All available for older records; missing records do not mean the home never sold.
ZIP averages use publicly displayable closed sales from our licensed MLS feed, matched to the same ZIP and exact property type. Months with fewer than 3 sales are omitted; the current month is incomplete. Lines connect available monthly observations across gaps and do not represent measured prices in missing months. These averages are not adjusted for size, condition, or location within the ZIP, and are not an appraisal. Feed coverage may not include every sale. All available shows the available home and ZIP history, with mortgage rates over the same dates.
Mortgage benchmark: Freddie Mac Primary Mortgage Market Survey®. © Freddie Mac. Weekly national 30-year fixed rates, not APRs or a loan quote. Actual terms vary. Methodology changed in November 2022. The chart does not establish that interest-rate changes caused a home’s price changes.
Lines connect recorded asking and sale prices. They are visual guides, not estimates of the home’s value between those dates.
No earlier records were returned by our current sources. This does not mean the home has never sold.
MLS records may be incomplete. Earlier asking prices are not sale prices.