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21 Bay Island, Newport Beach, CA 92661

$16.75M4bd · 6ba · 4,395 sqft
Lot 4,395 sqft•HOA $7594/mo•Single Family Residence•
Active
•72d on market•MLS# OC-26169145

Property Description

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.

Features & Amenities

FeeBuilt 2000

Property Details

Land Type
Fee
Year Built
2000
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
2
Garage Spaces
2
Heating
Central, Fireplace(s)
Cooling
Central Air
View
Bay, City Lights, Harbor, Water, See Remarks
Roof
Slate
City
Newport Beach
Zip Code
92661
County
Orange
Listed byBalboa Real Estate, Inc, Hunter Plescia

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$84,697.12
Principal & Interest
Loan Amount
$13,400,000
Total Interest
$17,090,961
Total Payment Over 30 Years
$30,490,961
This calculator provides estimates only. Actual mortgage payments may include taxes, insurance, HOA fees, and PMI. Contact a lender for accurate quotes.

Comparative Market Analysis

Luxury Tier · 5 active · 5 closed

21 Bay Island, Newport Beach, CA 92661

Newport Beach · Single Family Residence

$16.75M
Luxury Tier
Beds
4
Baths
6
Sqft
4,395
Lot
4,395 sqft
Year
2000
$/Sqft
$3811
Pool: No✓
Spa: Yes✓
View: city✓
Garage: 2-car✓

Listed 88.2% above the median closed sale of $8,900,000. Price per sqft ($3,811) is a 63% premium to closed comps ($2,342). Closed comps sold at 88% of list — buyers have negotiating leverage. Luxury tier — fewer comparable sales widen the confidence range.

Price Position

Positioned above the market — commands a premium.

Premium
Subject listed at $16.75M· $3,811/sqft
Total list price
Closed comps
vs closed median $8.90M
+$7.85M (+88.2%)
Active comps
vs active median $12.99M
+$3.75M (+28.9%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $2,729
+$1K (+39.6%)

Active Properties (5)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
1201 Bay AvenueNewport Beach2026564,5323,501$2,867$12.99M381
809 Via Lido SoudNewport Beach1984564,3053,150$4,762$20.50M2081
47 Linda IsleNewport Beach1969574,3445,400$2,991$12.99M18678
2209 Cliff DriveNewport Beach1971464,5097,405$832$3.75M8472
2975 CATALPA STREETNewport Beach2015554,55415,960$2,195$9.99M266
Total: 5 · Average4.86.04,448.87,083.2$2,729.4$12.05M59
Median4,509$12.99M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
701 Bayside DriveNewport Beach200708/17/2026564,4105,300$10.88M$8.90M$2,0180.825983
736 Harbor Island DriveNewport Beach197910/07/2026543,9225,000$9.75M$9.35M$2,3840.9610677
600 Via Lido NordNewport Beach198107/02/2026333,8463,600$17.00M$15.50M$4,0300.9112773
218 Evening StarNewport Beach196410/02/2026544,5006,000$9.90M$8.50M$1,8890.869972
520 KingsNewport Beach198606/03/2026444,1738,601$6.60M$5.80M$1,3900.8815867
Total: 5 · Average4.44.24,170.25,700.2$9.61M$9.61M$2,342.2—109.8
Median4,173$8.90M$8.90M

Market Analysis

List vs Sale $/SqFt

Sale Price Trend

Days on Market

Sale vs List Price

AI-generated CMA

This analysis was generated automatically from MLS data. For an in-depth, human-reviewed valuation, contact Joseph Sardella at josephsardella@gmail.com.