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$1,798,000
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Property Description
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.
Full Property Details
Full Property Details for 20 Greenwich Ave
General
- Price: $1,798,000
- Taxes: $21,931
- Status: Active
- Type: Multi-Family
- Source: Long_Island
- MLS ID: 998376
- Updated: 5/13/2026
- Added to Site: 18 day(s) ago
Interior
- Interior Features: 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, His and Hers Closets, Kitchen Island, Marble Counters, Natural Woodwork, Open Floorplan, Open Kitchen, Original Details, Primary Bathroom, Sound System, Speakers, Storage, Walk-In Closet(s), Washer/Dryer Hookup, Wired for Sound
- Fireplace: Yes
- Number of Fireplaces: 1
- Fireplace(s): Wood Burning
- Laundry Facilities: Yes
- Flooring: Ceramic Tile, Wood
Rooms
Bathrooms
- Total Bathrooms: 4
- Full Bathrooms: 4
Bedrooms
- Total Bedrooms: 5
Other Rooms
- Laundry: Gas Dryer Hookup, In Kitchen, Laundry Room
Additional Information
- Shared Amenities: None
- Spa: Yes
- Security/Safety: Security Gate, Security Lights, Video Cameras
Exterior
- Exterior Features: Awning(s), Balcony, Rain Gutters
- Porch/Patio/Deck: Covered, Deck
Parking
- Total Spaces: 6
- Parking Features: Attached, Carport, Driveway, Tandem
Location
- County: Nassau County
- Cross Streets: Bayville Avenue
- Driving 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 approximately 7.5 miles through Jericho, Syosset, and Muttontown into Oyster Bay. Turn left onto Lexington Avenue in Oyster Bay Village. Turn left onto W Main Street, which quickly becomes West Shore Road. Follow West Shore Road North for 2.5 miles across the bridge over Mill Neck Creek into Bayville. Turn right onto Bayville Avenue after crossing the bridge. Turn right onto Greenwich Avenue, and number 20 will be on your right
- Direction Faces: North
School Information
- High School District: Locust Valley
- Elementary School: Bayville Elementary School
- Middle School: Locust Valley Middle School
- High School: Locust Valley High School
Heating & Cooling
- Central air: Yes
- Cooling Type: Central Air, Ductwork
- Heating Type: Hot Water
- Heating Zones: 2
Utilities
- Sewer: Cesspool, Septic Tank
- Water: Public
- Utility Description: Cable Connected, Electricity Connected, Natural Gas Connected, Water Connected
Structural Information
- Architectural Style: Contemporary
- Detached/Attached: Detached
- Construction: Stone, Vinyl Siding
- Windows: Double Pane Windows, Oversized Windows, Skylight(s), Wall of Windows
- Building Size: 3558
- Square Feet: 3,558
- Year Built: 1948
Lot Features
- Property View: Panoramic, Water
- Lot Size (Acres): 0.25
- Lot Size (Sq. Ft.): 11,024
- Lot Dimensions: 80 x 138
- Frontage: See Remarks
- Frontage Feet: 78
- Road Maintenance: Private Maintained Road
- Fence: Yes
- Lot Features: Waterfront
- Fencing (Description): Chain Link, Full, Vinyl
Water Features
- Water Front: Yes
- Water View: Yes
- Water Front View: Beach Access, Beach Front, Waterfront
Financial Considerations
- Taxes Include: Trash, Water
- Tax Amount: $21,931
Disclosures and Reports
- Special Conditions: None
- Property ID: 2401-28-011-00-0053-0
- Block: 11
- Lot Number: 53
Listed by Greene Realty Group
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Schools
Schools serving 20 Greenwich Ave
School District:Locust Valley Central School District
| Name | Grades | Distance |
|---|---|---|
Bayville Elementary School, Bayville, NY 50 Godfrey Avenue, Bayville, NY 11709 | K-5 | 1.2 mi |
Ann Macarthur Primary 100 Ryefield Road, Locust Valley, NY 11560 | K-5 | 3 mi |
Locust Valley Middle School 99 Horse Hollow Road, Locust Valley, NY 11560 | 6-8 | 3 mi |
Locust Valley High School 99 Horse Hollow Road, Locust Valley, NY 11560 | 9-12 | 3 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 20 Greenwich Ave
Date
Details
Price
Change
Source
5/12/2026
Listed
$1,798,000
58.07%
MLS
6/30/2004
Sold
$1,137,500
—
Public Record
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Tax History
Tax History for 20 Greenwich Ave
Year
Property Taxes
Change
Tax Assessment
Change
2025
$22,102
398%
$1,106
3%
2024
$4,441
-78%
$1,070
-1%
2023
$20,582
-11%
$1,080
-10%
2022
$23,087
2%
$1,200
4%
2021
$22,560
6%
$1,157
-39%
2020
$21,370
—
$1,898
—
2019
$21,370
6%
$1,898
—
2018
$20,193
10%
$1,898
—
2016
$18,380
7%
$1,898
—
2016
$17,213
9%
$1,898
—
2014
$15,780
—
$1,898
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 20 Greenwich Ave
20 Greenwich Avenue, Bayville, NY 11709 (MLS# 998376) is a Multi-Family property with 2 units containing 5 bedrooms and 4 full bathrooms. 20 Greenwich Avenue is currently listed for $1,798,000 and was received on May 12, 2026. Want to learn more about 20 Greenwich Avenue? Do you have questions about finding other Multi-Family real estate for sale in Bayville? You can browse all Bayville real estate or contact a Coldwell Banker agent to request more information.
