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18 20th Avenue

Sea Cliff, NY, 11579

$1,650,000
4Bedrooms
3Bathrooms
2,022Interior sq ft
0.22Acres
1898Year built

AN INTRODUCTION

A closer look.

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.

Property overview

Property type
Single Family Residence
Architecture
Colonial
Year built
1898
Lot size (sq ft)
9,000
Status
Active
Listed
2026-10-14
MLS number
KEY1062551

Interior & comfort

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
Heating
Forced Air, Hot Water, Natural Gas, Radiant, Radiant Floor
Cooling
Central Air
Basement
Bilco Door(s), Partially Finished, Storage Space

Outdoors & amenities

Exterior features
Garden, Lighting, Rain Gutters
Parking
Detached, Driveway, Electric Vehicle Charging Station(s), Garage, Garage Door Opener, Oversized
Garage spaces
2

Schools & location

Postal town
Sea Cliff
County
Nassau County
School district
North Shore
Elementary school
Sea Cliff Elementary School
Middle school
North Shore Middle School
High school
North Shore Senior High School

Taxes & utilities

Annual property taxes
$17,699
Tax year
2026
Association
No
Water
Public
Sewer
Cesspool

Listing courtesy of Douglas Elliman Real Estate · 646-331-1237
MLS #KEY1062551 · Active

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