18 20th Avenue
Sea Cliff, NY, 11579 $ 1,650,000
Bedrooms4 Baths2.1 Sq 2,022 Monthly Estimate*
$ 11,396
for $1,650,000 with 4 bedrooms and 2 full baths, 1 half bath. This 2,022 square foot home was built in 1898 on a lot size of 0.22.
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.
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FeaturesInteriorInterior Amenities 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 Origi
Basement Bilco Door(s) Partially Finished Storage Space
Flooring Hardwood Tile
Basement Features Bilco Door(s) Partially Finished Storage Space
Basement (Y/N) Y
Window Features Blinds Double Pane Windows Drapes
Fireplace Y/N N
Half Baths 1
Total Bedrooms 4
Total Baths 3
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GeneralSewer Cesspool
Heating Forced Air Hot Water Natural Gas Radiant Radiant Floor
Cooling Central Air
Utilities Electricity Connected Natural Gas Connected Water Connected
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
Garage Spaces 2
Patio/Porch Features Deck Patio Porch
Architectural Style Colonial
Security Features Fire Alarm Security Lights Security System Smoke Detector(s) Video Cameras
Construction Materials HardiPlank Type
Year Built 1898
Property Subtype Single Family Residence
Tax Year 2026
Parcel Number 2423-21-163-00-0886-0
County Nassau County
Property Type Residential
HOA N
Garage Y/N Y
Total Rooms 9
Full Baths 2
High School North Shore Senior High School
City Oyster Bay
Senior Community Y/N N
High School District North Shore
Carport Y/N N
Spa Features Bath
Elementary School Sea Cliff Elementary School
Property Attached Y/N N
Tax Annual Amount 17699
Middle/Junior High School North Shore Middle School
Building Area Units Square Feet
Standard Status Active
Middle/Junior School District North Shore
Elementary School District North Shore
Tax Lot 886 887 888 907
Year Built Effective 2017
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ExteriorExterior Amenities Garden Lighting Rain Gutters
Fencing Back Yard Fenced Front Yard Full Wood
Parking Features Detached Driveway Electric Vehicle Charging Station(s) Garage Garage Door Opener Oversized Detached Driveway Electric Vehicle Charging Station(s) Garage Garage Door Opener Oversized
Water Source Public
Waterfront Y/N N
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* Excluded FeaturesList ByRaquel Knoell CBRListing Agent
Douglas Elliman Real EstateBroker
Affordability Calculator
- Monthly Principal & Interest
- $11,396
- Monthly Property Taxes
- $1,475
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 7.375% 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.
Learn more about how to save NearbySingle family listings in Sea Cliff, NY
Average List Price $1,231,864
Percent of Sale Price 25%
About Sea Cliff, NY 4,975 Population
-3% Since 2002
$ 117,081 Median Income
47.35 Median Age
29% Households with Children
Trends Information provided by ATTOM Data Solutions.
4100237 Elementary School
4100808 Middle School
North Shore Senior High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 10/15/2026 | $1,650,000 | | Listed Price |