18 20th Ave Sea Cliff, NY 11579
18 20th Ave Sea Cliff, NY 11579 | MLS 1062551 Photo 1
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18 20th Ave Sea Cliff, NY 11579 | MLS 1062551 Photo 5
For more information on this listing, contact us at: (914) 438-5975
Active
$1,650,000

18 20th Ave Sea Cliff, NY 11579

Single Family Residence Property Type
4 Beds
2 Full 1 Half Baths
2,022 Sq. Ft.
1898 Year Built
Nassau County
View All Property Details
There's something special about a home that welcomes you before you even enter! At 18 20th Avenue, the beautiful mahogany front porch sets the tone for this exceptional Colonial, offering timeless character, modern luxury, and remarkable privacy in the beautiful Village of Sea Cliff.
Originally built in 1898 and completely rebuilt in 2017 by a builder for his own residence, this thoughtfully designed home combines classic architecture with modern conveniences and quality craftsmanship. Inside, rich hardwood floors, solid wood doors, and sun-filled living spaces lead to an expansive dining area, inviting family room with acoustic pocket doors, and chef-inspired kitchen featuring quartz countertops, a 36-inch Thor gas range, wine refrigerator, and reverse osmosis water filtration. A custom mudroom adds everyday convenience.
Upstairs, the primary suite offers a spa-like experience with a steam shower, radiant heated floors, marble double vanity, and 12-jet soaking tub. Three additional bedrooms and a dedicated laundry room complete the second level, while a semi-finished lower level provides additional flexible space for recreation, storage, and everyday needs, along with a second washer and dryer for added convenience.
Smart-home features include Hunter Douglas motorized blinds, integrated lighting and security systems, and built-in speakers. Additional improvements include Hardie siding, energy-efficient windows, two-zone central air conditioning, and a generator hookup.
Situated on just under a quarter acre, the fully fenced property is beautifully landscaped, offering exceptional privacy, multiple yard areas, a patio, and a deck ideal for entertaining. Landscape lighting and string lights create a wonderful outdoor atmosphere, while sunset views add to the setting. An oversized, recently renovated two-car garage with epoxy floors, a spacious driveway, and an EV charger provide ample parking and convenience.
Just moments from Sea Cliff's waterfront, beaches, parks, restaurants, and shops, this distinctive home offers a blend of historic character, modern comfort, and private outdoor living.
MLS # 1062551
Monthly Fees N/A
On Site 9 Days
Last Updated 10/20/2026

Open House Schedule

Friday, October 23, 2026 | 12:00 PM - 1:30 PM

Location

Contact Agent

Ruth Garcia

Ruth Garcia

(914) 438-5975

Property Details

Community Information

Address 18 20th Ave, Sea Cliff, NY 11579
County Nassau
City Sea Cliff
Zip Code 11579

School Information

School District North Shore
Elementary School Sea Cliff Elementary School

Architecture

Bedrooms 4
Bathrooms 2 Full / 1 Half
Year Built 1898
Style Colonial
Construction Materials HardiPlank Type
Year Built Effective 2017
Basement Bilco Door(s), Partially Finished, Storage Space
Garage Spaces 2

Features / Amenities

Interior Features Breakfast Bar, Built-in Features, Chandelier, Chefs Kitchen, Double Vanity, Eat-in Kitchen, Entrance Foyer, Formal Dining, High Ceilings, High Speed Internet, Kitchen Island, Natural Woodwork, Open Kitchen, Original Details, Pantry, Primary Bathroom, Quartz/Quartzite Counters, Recessed Lighting, Smart Thermostat, Soaking Tub, Sound System, Speakers, Storage, Walk-In Closet(s), Washer/Dryer Hookup, Wired for Sound
Appliances Convection Oven, Dishwasher, Exhaust Fan, Freezer, Gas Oven, Gas Range, Microwave, Refrigerator, Stainless Steel Appliance(s), Tankless Water Heater, Washer, Water Purifier Owned, Wine Refrigerator
Flooring Hardwood, Tile
Laundry In Basement, In Hall, Multiple Locations
Spa Bath
Exterior Features Garden, Lighting, Rain Gutters
Patio And Porch Deck, Patio, Porch
Window Blinds, Double Pane Windows, Drapes
Security Features Fire Alarm, Security Lights, Security System, Smoke Detector(s), Video Cameras
Parking Features Detached, Driveway, Electric Vehicle Charging Station(s), Garage, Garage Door Opener, Oversized
Amenities Fenced Yard
Cooling Central Air
Heating Forced Air, Hot Water, Natural Gas, Radiant, Radiant Floor
Total Rooms 9

Property Features

Lot Size 9,000 Sq. Ft. / 0.22 Acres
Lot Features Back Yard, Corner Lot, Garden, Landscaped, Near Public Transit, Near School, Near Shops, Private, Sprinklers In Front, Sprinklers In Rear, Stone/Brick Wall
Property Attached No
Utilities Electricity Connected, Natural Gas Connected, Water Connected
Sewer Cesspool
Water Public
Fencing Back Yard, Fenced, Front Yard, Full, Wood

Tax and Financial Info

Tax Year 2026
Tax Annual Amount $17,699

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18 20th Ave Sea Cliff, NY 11579 | MLS 1062551
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Listing provided courtesy of Douglas Elliman Real Estate (516-621-3555).
Listings courtesy of Onekey MLS as distributed by MLS GRID.
Based on information submitted to the MLS GRID as of October 22, 2026 9:15 AM EST .
All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

Properties displayed may be listed or sold by various participants in the MLS,” as established by the applicable MLS Governing Documents.
18 20th Ave Sea Cliff, NY 11579
  • $1,650,000
  • 4 beds
  • 2 full  1 half baths
  • 2,022 Sq. Ft.