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Signature Premier Properties, 95 W Main St, Sayville, NY 11782 Office: (631) 567-0100

For Sale

18 20th Avenue Sea Cliff, NY 11579

$1,650,000

Listed October 14, 2026, 21 days ago

Listing courtesy of Raquel Knoell CBR, Douglas Elliman Real Estate MLS #KEY1062551

  • 4Bedrooms
  • 2.5Bathrooms
  • 2,022Square feet
  • $816Per square foot
  • 1898Year built

About this home

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.

Description supplied by the listing broker.

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

Property details

Interior

Attic
Storage,Unfinished
Kitchens
1
Flooring
Hardwood, Tile
Windows
Blinds, Double Pane Windows, Drapes
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

Systems and utilities

Heating
Forced Air, Hot Water, Natural Gas, Radiant, Radiant Floor
Cooling
Central Air
Utilities
Electricity Connected, Natural Gas Connected, Water Connected
Water
Public

Exterior and lot

Construction
HardiPlank Type
Architectural style
Colonial
Parking
Detached, Driveway, Electric Vehicle Charging Station(s), Garage, Garage Door Opener, Oversized
Fencing
Back Yard, Fenced, Front Yard, Full, Wood
Patio and porch
Deck, Patio, Porch
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

Tax and legal

Parcel number
2423-21-163-00-0886-0
Tax lot
886,887,888,907
Tax block
163
Tax section
21
Listing agreement
Exclusive Right To Sell

Property details supplied by the listing broker through OneKey MLS, as of November 4, 2026. Fields not shown were not supplied and should not be read as absent from the property.

This listing

  1. October 14, 2026 Listed at $1,650,000

Location

18 20th Avenue, Sea Cliff, NY 11579

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