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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
•92d 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 8.1% above the median closed sale of $15,500,000. Closed comps sold at 92% of list — buyers have negotiating leverage. Expect a longer timeline — comps averaged 149 days on market. 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 $15.50M
+$1.25M (+8.1%)
Active comps
vs active median $17.00M
−$245K (−1.4%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $4,470
−$659 (−14.7%)

Active Properties (5)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
928 Balboa BoulevardNewport Beach2016463,3414,233$4,280$14.30M6585
500 Via Lido NordNewport Beach1940543,8004,200$4,868$18.50M673
642 Via Lido NordNewport Beach1981442,9192,880$5,822$17.00M6069
2804 OceanCorona del Mar2018454,4865,849$4,234$19.00M17069
2800 Ocean BoulevardCorona del Mar1987444,7706,240$3,144$14.99M23062
Total: 5 · Average4.24.63,863.24,680.4$4,469.6$16.76M106.2
Median3,800$17.00M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
706 OceanfrontNewport Beach202304/23/2026464,4894,200$15.99M$14.90M$3,3190.933088
704 Via Lido NordNewport Beach199408/11/2026453,1743,150$17.89M$16.25M$5,1200.9124373
600 Via Lido NordNewport Beach198107/02/2026333,8463,600$17.00M$15.50M$4,0300.9112871
1909 Bay AveNewport Beach201701/30/2026443,5584,650$15.99M$14.40M$4,0470.908170
812 W Bay AveNewport Beach199001/08/2026796,3197,664$20.00M$19.00M$3,0070.9526557
Total: 5 · Average4.45.44,277.24,652.8$16.01M$16.01M$3,904.6—149.4
Median3,846$15.50M$15.50M

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.