20 Greenwich Avenue Bayville, NY $ 1,798,000
20 Greenwich Avenue
$ 1,798,000
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20 Greenwich Avenue

Bayville, NY, 11709
$ 1,798,000
Bedrooms5 Baths4.0 Sq 3,558

Monthly Estimate*

$ 11,071

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Multi-Family Home for sale in Bayville, NY

for $1,798,000 with 5 bedrooms and 4 full baths. This 3,558 square foot home was built in 1948 on a lot size of 0.25.

Bayville Waterfront Two Family Masterpiece. Experience a unique lifestyle with this home. Originally part of the historic Long Island Sound ferry trade community in 1930 (per FEMA) this property was reconstructed as a two-family residence after WWII (1948 per Nassau Property Record) and meticulously modernized over the following years . The home offers a rare blend of coastal history and contemporary luxury on a quarter acre of beachfront property that includes approximately 3,550 sq. ft. of interior living space. The versatile floor plan features 5 generous bedrooms and 3.5 designer bathrooms incorporated into two apartments, for extra income or as a compound. The property offers on-site parking for 6 cars with covered parking for at least 4 of those cars. Unrivaled Shoreline Privacy. This property offers approx. 80ft of private deeded beach frontage, extending to the mid-high tide line—a rare feature providing superior privacy. The outdoor resort experience includes, covered sitting areas, plus three remote-operated awnings. Superior Infrastructure. Built for peace of mind with a waterproofed upper-level boiler room, dual central air units, dual hot water heaters, and a comprehensive security system with a remote front gate and soundproofed between units. The Greenwich Avenue Property Owners Association (no mandatory dues) provides Village enforced permit-only resident parking and property owners private beach next to your own deeded beach. The property is ideally situated with the Sound side Beach and playground on the corner, adjacent to historic Walls Wharf and close distance to the Crescent Beach Club, this is a true seaside retreat.

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Multi-Family Active

Price

$ 1,798,000

Bedrooms

5

Full Bath

4

Property Type

Multi-Family

Taxes

$ 21,931

Style

Contemporary

Lot Size

0.25

Year Built

1948

Town/City

Bayville

County/Region

Nassau

MLS | Web ID

998376

Features
Interior
Interior Amenities First Floor Bedroom First Floor Full Bath Breakfast Bar Cathedral Ceiling(s) Ceiling Fan(s) Chandelier Chefs Kitchen Crown Molding Entrance Foyer Formal Dining Granite Counters High Speed Internet Hi
Flooring Ceramic Tile Wood
Total Fireplaces 1
Fireplace Features Wood Burning
Basement (Y/N) N
Window Features Double Pane Windows Oversized Windows Skylight(s) Wall of Windows
Fireplace Y/N Y
Total Bedrooms 5
Total Baths 4
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General
Sewer Cesspool Septic Tank
Heating Hot Water
Cooling Central Air Ductwork
Utilities Cable Connected Electricity Connected Natural Gas Connected Water Connected
Patio/Porch Features Covered Deck
Architectural Style Contemporary
Security Features Security Gate Security Lights Video Cameras
Construction Materials Stone Vinyl Siding
Year Built 1948
View Panoramic Water
Property Subtype Duplex
Tax Year 2026
Parcel Number 2401-28-011-00-0053-0
Waterfront Features Beach Access Beach Front Waterfront
County Nassau County
Property Type Residential Income
Association Amenities None
Facing Direction North
Garage Y/N N
Full Baths 4
Directions From LIE; Head North on NY-106 N / NY-107 N (Oyster Bay Road) directly from the Exit 40 interchange. Stay left to continue on NY-106 N when NY-107 splits off toward Glen Cove. Follow NY-106 N for app
High School Locust Valley High School
City Oyster Bay
Disclosures Seller Property Disclosure
Senior Community Y/N N
High School District Locust Valley
Number Of Units Total 2
Carport Spaces 4
Carport Y/N Y
Elementary School Bayville Elementary School
Property Attached Y/N N
Tax Annual Amount 21931
Middle/Junior High School Locust Valley Middle School
Property Condition Updated/Remodeled
Building Area Units Square Feet
Standard Status Active
Middle/Junior School District Locust Valley
Elementary School District Locust Valley
Tax Assessed Value 1076
Tax Lot 53
Year Built Effective 2005
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Exterior
Exterior Amenities Awning(s) Balcony Rain Gutters
Fencing Chain Link Full Vinyl
Parking Features Attached Carport Driveway Tandem Attached Carport Driveway Tandem
Water Source Public
Total Parking 6
Parking Spaces 6
Foundation Details Concrete Perimeter
Spa Y
Building Area Total 3558
Frontage Length 78
Waterfront Y/N Y
Road Frontage Type See Remarks
Road Responsibility Private Maintained Road
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Internal Only
Street Number 1 20
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* Excluded Features
List By
Derek J. Greene

Listing Agent

Greene Realty Group

Broker

860-560-1006

Contact

Affordability Calculator

$12,898
Per Month
86%
14%
0%
Monthly Principal & Interest
$11,071
Monthly Property Taxes
$1,828
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
4101140 Elementary School
4099618 Middle School
Locust Valley High School High School
Pricing History
DatePricePrice ChangeDescription
5/12/2026$1,798,000 Listed Price

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20 Greenwich Avenue, Bayville, NY, 11709 is a Multi-Family Home for sale at $1,798,000 with 3,558 sqft and a lot size of 0.25. 20 Greenwich Avenue has 5 bedrooms, 4.0 baths, and was built in 1948. The property's zip code is 11709 which is in Bayville, NY