21 Bay Island, Newport Beach, CA 92661
- 4 beds
- 6 baths
- 4,395 sq ft
- 4,395 sq ft lot
- Built 2000
$16,750,000
Est. $113,684/mo with 20% down, 30-year fixed
$3,811 a sq ft against a $1,609 Newport Beach median. Ask how it comparesSubdivision Bay Island
The home
About 21 Bay Island
Set within Newport Beach’s most exclusive waterfront enclave, 21 Bay Island offers a rare combination of architectural distinction, direct harbor and yachting access, privacy, and effortless coastal living. Bay Island is a gated, pedestrian-only sanctuary of just 23 waterfront homes, reached by foot or golfcart over a charming private bridge, where lush picking gardens, mature trees, a private sandy beach, and sweeping harbor views create an atmosphere unlike anywhere else in Newport Beach - moments from the Balboa Peninsula and steps from the Pacific Ocean.
Held in Bay Island’s distinctive stock-cooperative, 21 Bay Island is a detached single-family home designed by acclaimed architect Kurt Donat and built by Neil Longman Construction. This Hamptons-inspired residence blends timeless nautical character with the scale and comfort expected of an ultra-luxury waterfront home. Polished hardwood floors, crisp white millwork, refined coastal finishes, expansive entertaining spaces, and walls of windows evoke the elegance of a classic yacht while framing captivating views of Newport Harbor. Generous living areas open naturally to terraces, gardens, and the water, creating a seamless setting for intimate gatherings, grand entertaining, or quiet evenings watching sunsets and boats cross the harbor. Serviced by a private elevator, this home features multiple fireplaces, a waterfront spa terrace, a dedicated office providing a quiet setting for work or study, and a light-filled upper-level loft with four built-in beds that make for a charming and flexible additional sleeping space, ideal as a bunk room, guest retreat, or additional bedroom.
For the boating enthusiast, the property delivers the ultimate Newport Beach lifestyle with a private dock, and immediate access to the harbor’s main channels. Begin the day on the water, cruise the coast, and return home for a sunset overlooking the bay. Bay Island’s private beach, beautifully maintained gardens, waterfront pathways, and intimate residential character make it more than a neighborhood—it is a world apart.
Few properties offer this combination of prestige, tranquility, walkability, boating access, ocean proximity, and architectural pedigree. Bay Island represents the pinnacle of Newport Beach living: private yet connected, refined yet relaxed, and surrounded by the beauty of the water.
Property details for 21 Bay Island
This 4-bedroom, 6-bath single-family home sits in the Bay Island neighborhood of Newport Beach in Orange County. It has 4,395 square feet of living space on a 4,395-square-foot lot and is listed at $16,750,000, about $3,811 per square foot. The home was built in 2000. The MLS record lists the assessor parcel number as 048-040-02. Highlights include harbor and bay views, bay frontage, a private spa, a fireplace, a gated community, and a two-car garage.
Photographs
Photos of 21 Bay Island, Newport Beach
Specifications
Home Details
General Features
- Property Type
- Single Family Residence
- MLS Number
- OC26169145
- Year Built
- 2000
- Living Area (sq ft)
- 4,395
- Lot Size (sq ft)
- 4,395
- Lot Size (acres)
- 0.1009
- Levels
- Three Or More
- Bedrooms
- 4
- Full Baths
- 3
- Half Baths
- 1
- Garage Spaces
- 2
- Parking Spaces
- 2
- View
- Bay, City Lights, Harbor, Water
- HOA Dues
- $7,594
- HOA Frequency
- Quarterly
- HOA Name
- Bay Island Club
- Parcel Number
- 04804002
- On Market Date
- 2026-08-21
- Zoning
- R-1
- Listing Terms
- Standard
- HOA fees
- $2,948 monthly
Interior Features
- Interior Features
- Balcony, Breakfast Area, Coffered Ceilings, Separate Formal Dining Room, Elevator, Living Room Deck Attached, Paneling Wainscoting, Stone Counters, Wired For Sound, Entrance Foyer, Jack And Jill Bath, Walk In Pantry, Walk In Closets
- Appliances
- Built In Range, Dishwasher, Electric Oven, Gas Oven, Gas Range, Microwave, Refrigerator, Water Heater
- Heating
- Central, Fireplaces
- Cooling
- Central Air
- Fireplace
- Gas
- Laundry
- Laundry Room, Upper Level
- Main Level Bathrooms
- 2
- Entry Level
- 1
- Common Walls
- No Common Walls
- Doors
- French Doors
- Accessibility
- None
- Rooms
- Bathroom, Dining Room, Other, Primary Bedroom, Pantry, Foyer, Living Room, Family Room, Den, Primary Bathroom
Exterior Features
- Architectural Style
- Cape Cod, Custom
- Exterior Features
- Boat Slip, Dock, Rain Gutters
- Roof
- Slate
- Construction
- Brick, Wood Siding
- Foundation
- Slab
- Lot Features
- Garden
- Patio and Porch
- Concrete, Patio
- Parking
- Garage, Off Site, Private, Community Structure
- Fencing
- Glass
- Pool Features
- None
- Spa
- Private
- Sewer
- Public Sewer
- Water
- Public
- Utilities
- Electricity Connected, Natural Gas Connected, Water Connected
- Condition
- Turnkey
- Units
- 1
Community Features
- Subdivision
- Bay Island (BISL)
- Community Features
- Water Sports, Gated
- Association Amenities
- Controlled Access, Other, Playground, Security, Tennis Courts
- Security
- Gated Community, Key Card Entry
- Second HOA Dues
- $1,250
The record
Property History for 21 Bay Island
| Date | Event | Price | Note |
|---|---|---|---|
| Aug 21, 2026 | Status changed to Active | From Coming Soon | |
| Aug 21, 2026 | Listed for sale | $16,750,000 |
Added by Realatrends Real Estate
Map Facts for 21 Bay Island
We looked up this home's map point in public government maps. These facts are not part of the MLS listing.
Hazard zones
- Flood zone
Zone X, 0.2 percent annual chance flood hazard. Outside FEMA's Special Flood Hazard Area.
FEMA National Flood Hazard Layer, FIRM panel 06059C0382K effective March 21, 2019. Checked October 15, 2026.
- Earthquake fault zone
Outside the Alquist-Priolo Earthquake Fault Zones.
California Geological Survey, Earthquake Fault Zones map, Newport Beach quadrangle, released July 1, 1986. Checked October 15, 2026.
- Liquefaction zone
Inside a Seismic Hazard Zone for liquefaction.
California Geological Survey, Seismic Hazard Zones map, Newport Beach quadrangle, released April 15, 1998. Checked October 15, 2026.
- Landslide zone
Outside the earthquake-induced landslide zones.
California Geological Survey, Seismic Hazard Zones map, Newport Beach quadrangle, released April 15, 1998. Checked October 15, 2026.
- Tsunami hazard area
Inside the Tsunami Hazard Area on the State's evacuation planning map.
California Geological Survey and Cal OES, Tsunami Hazard Area map for Orange County (2021). Checked October 15, 2026.
Internet and charging
- Fixed internet
Cable: Spectrum, up to 1,000 Mbps, at 14 of 14 residential locations in this census block. DSL: AT&T, up to 10 Mbps, at 6 of 14. Fixed wireless: Verizon, up to 300 Mbps, at 13 of 14.
FCC National Broadband Map, provider-reported data as of December 31, 2025, for census block 060590628003002, not for this address. Not endorsed by the FCC. Checked October 15, 2026.
- EV charging
Nearest public charger 0.8 miles away (Tesla Destination, 1 Level 2 port). 156 public charging ports within 3 miles.
U.S. Department of Energy, Alternative Fuels Data Center. Straight-line distance. Checked October 15, 2026.
These facts are for the listing's map point, which can sit off the lot. A zone line can also cross a lot, and agencies revise their maps. These lines are not a Natural Hazard Disclosure. Check the official maps and the seller's disclosures before you rely on them. Sources for the earthquake zone lines: Reproduced with permission, California Geological Survey, Webservice of Official Maps of Alquist-Priolo Earthquake Fault Zones (2025). Reproduced with permission, California Geological Survey, Webservice of Official Maps of Seismic Hazard Zones (2025).
Official maps
Cost of ownership
Estimated monthly payment
7.18% · 30-yr fixed$
$131,312/mo
10% down · 30-year fixed · $1,675,000 down
Principal & interest$102,123
Mortgage insurance (est., over 80% LTV)$6,281
Property tax (est. 1.08%)$15,075
Home insurance (rough est., varies widely)$4,885
HOA from listing$2,948
$113,684/mo
20% down · 30-year fixed · $3,350,000 down
Principal & interest$90,776
Property tax (est. 1.08%)$15,075
Home insurance (rough est., varies widely)$4,885
HOA from listing$2,948
$102,337/mo
30% down · 30-year fixed · $5,025,000 down
Principal & interest$79,429
Property tax (est. 1.08%)$15,075
Home insurance (rough est., varies widely)$4,885
HOA from listing$2,948
Estimated carrying cost
$22,908/mo
All cash · taxes and insurance only
Principal & interestNone (cash purchase)
Property tax (est. 1.08%)$15,075
Home insurance (rough est., varies widely)$4,885
HOA from listing$2,948
Estimate only, not a loan offer or quote. Principal and interest use the Freddie Mac 30-year fixed average of 7.18% (week of Nov 5, 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.
Next steps
Buying 21 Bay Island
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Selling near 21 Bay Island
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The neighborhood
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.
Newport Beach home sales, past 12 months
- Homes sold
- 461
- Median price
- $4,365,000
- Median days on market
- 22
- Median per sq ft
- $1,609
Recorded MLS closings of single-family homes, Oct 29, 2025 to Oct 29, 2026. Days on market run from listing to going under contract.
Price per square foot against recent Newport Beach sales
At $3,811 per square foot, this home's asking price is 137% above the Newport Beach median of $1,609 for single-family homes that closed in the past 12 months.
Recent Newport Beach sales
| Address | Closed | Price | Sq ft | Per sq ft | Days on market |
|---|---|---|---|---|---|
| 2007 Miramar | Oct 29, 2026 | $4,850,000 | 2,408 | $2,014 | 0 |
| 449 M Street | Oct 29, 2026 | $3,800,000 | 1,174 | $3,237 | 12 |
| 4 Narbonne | Oct 29, 2026 | $10,000,000 | 5,463 | $1,830 | 0 |
| 1740 E Ocean Boulevard | Oct 28, 2026 | $4,600,000 | Not reported | Not reported | 112 |
| 238 Walnut Street | Oct 28, 2026 | $2,395,000 | 1,719 | $1,393 | 111 |
Schools
School District for 21 Bay Island
As listed in the MLS record. Confirm attendance boundaries with the school district.
The MLS record lists the school district as Newport Mesa Unified.
Living in Newport Beach covers its schools, parks and beaches.
Location
Location
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Listed by Hunter Plescia of Balboa Real Estate, Inc
Listing information updated Aug 22, 2026 at 12:49 PM PT. Source: CRMLS.
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. The 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, the 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.