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18 20th Avenue
Sea Cliff NY 11579 US

$1,699,900

Active Listing ID 1039834
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4 bed
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2,022 square feet
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3.00 Bath (2 Full , 1 Half)
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Lot: 33.00 Acres
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Single Family Residence

$1,699,900

Active Listing ID 1039834
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18 20th Avenue Experience Modern Living with Historic Charm. 4 Beds | 2.5 Baths | Meticulously Expanded & Rebuilt in 2017. Welcome to a stunning example of comfortable living nestled in the charming community of Sea Cliff. Originally built in 1898, this exquisite Colonial home has been meticulously expanded and completely rebuilt in 2017 by a builder ensuring top-quality materials, premium finishes, and meticulous craftsmanship throughout. Elegant & Intelligent Living Spaces: * Grand Welcome: A classic covered front porch leads into a spacious living space perfectly designed for today's lifestyle. * Chef's Heart: A modern kitchen equipped with state-of-the-art appliances and high-end finishes. * Smart Home Technology: Fully integrated SMART home automation paired with custom automated Hunter Douglas blinds. * Premium Finishes: Rich hardwood floors run seamlessly throughout the entire home. * Daily Convenience: A functional mudroom features custom built-ins alongside a stylish powder room. Your Second-Floor Sanctuary: * Primary Suite Oasis: A luxurious retreat featuring a spacious walk-in closet and a spa-like marble bathroom complete with radiant heat, a steam shower, and a separate soaker tub. * House Accommodations: Three additional bright bedrooms, a centrally located hall bath, and a dedicated upstairs laundry area. Bonus Spaces & Private Resort Grounds: * Finished Basement: Provides a dedicated play area for guests, plus abundant extra storage. * Oversized Property: A custom-made fence with a beautiful arbor completely surrounds the property, offering ample private outdoor space. * Outdoor Entertaining: Enjoy a private patio, custom landscaping, professional exterior lighting, and hassle-free in-ground sprinklers. * Ample Parking & EV Ready: A 2-car detached garage recently updated with sleek epoxy flooring and an electric car charger, plus room for 3-4 additional cars in the private driveway. The Sea Cliff Lifestyle: Perfectly located close to beautiful North Shore beaches and quaint village shops, this home offers the absolute best of Sea Cliff living. Enjoy the dual benefits of exceptionally low taxes and enrollment in the highly acclaimed North Shore School District.

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Property Features

  • Facts
  • Lot Size: 33.00 Acres
  • Property Type: Residential
  • Property Sub-type: Single Family Residence
  • Features
  • Full Bathrooms: 2
  • 1/2 Bathrooms: 1
  • Cooling System: ENERGY STAR Qualified Equipment, Central Air
  • Exterior Finish: Garden, Lighting, Rain Gutters
  • Floor Covering: Hardwood, Tile
  • Heating Fuels: Radiant Floor, Energy Star Qualified Equipment (Heating), Natural Gas, Hot Water(Heating), Forced Air, Radiant
  • Additional Features
  • Basement
  • Patio

School Information

  • School
  • Sea Cliff Elementary School(Elementary)
  • North Shore Middle School(MiddleSchool)
  • North Shore Senior High School(HighSchool)

Property

  • propertytype: Residential
  • propertysubtype: Single Family Residence
  • listprice: 1699900
  • unparsedaddress: 18 20th Avenue
  • postalcity: Sea Cliff
  • stateorprovince: NY
  • country: US
  • postalcode: 11579
  • bathroomsfull: 2
  • bathroomshalf: 1
  • bathroomsonequarter: 0
  • bathroomsthreequarter: 0
  • lotsizeacres: 33
  • lotsizeunits: Acres
  • lotsizearea: 33
  • livingarea: 2022
  • livingareaunits: Square Feet
  • latitude: 40.846104
  • longitude: -73.649074
  • listagentfullname: Derek J. Greene
  • listagentemail: office@thegreenerealtygroup.com
  • listagentkey: 3yd-MLSLINY-166730
  • listagentmlsid: 166730
  • listagentpreferredphone: 8882785840
  • listofficekey: 3yd-MLSLINY-DERK01
  • listofficemlsid: DERK01
  • disclaimer: Copyright © 2026 OneKey MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
  • sourcesystemid: MLSLINY
  • yearbuilt: 1898
  • listingcontractdate: 2026-08-18
  • listagenturl: http://www.TheGreeneRealtyGroup.com
  • countyorparish: Nassau County
  • parcelnumber: 2423-21-163-00-0888-0
  • elementaryschool: Sea Cliff Elementary School
  • highschool: North Shore Senior High School
  • elementaryschooldistrict: North Shore
  • middleorjuniorschooldistrict: North Shore
  • highschooldistrict: North Shore
  • appliances: Convection Oven, Dishwasher, Dryer, ENERGY STAR Qualified Appliances, Exhaust Fan, Freezer, Gas Cooktop, Gas Oven, Gas Range, Microwave, Refrigerator, Stainless Steel Appliance(s), Tankless Water Heater, Washer, Gas Water Heater, Water Purifier Owned, Wine Refrigerator
  • cooling: ENERGY STAR Qualified Equipment, Central Air
  • constructionmaterials: HardiPlank Type
  • flooring: Hardwood, Tile
  • heating: Radiant Floor, Energy Star Qualified Equipment (Heating), Natural Gas, Hot Water(Heating), Forced Air, Radiant
  • fireplaceyn: False
  • transactiontype: ForSale
  • storiestotal: 0
  • parkingtotal: 5
  • parkingfeatures: Garage, Driveway, Oversize, Open
  • waterfrontyn: False
  • franchiseaffiliation: None
  • interiorfeatures: Breakfast Bar, Built-in Features, Chandelier, Chefs Kitchen, Double Vanity, Dry Bar, Eat-in Kitchen, ENERGY STAR Qualified Door(s), Entrance Foyer, Formal Dining, High Ceilings, High Speed Internet, Natural Woodwork, Open Floorplan, Open Kitchen, Pantry, Primary Bathroom, Quartz/Quartzite Counters, Recessed Lighting, Smart Thermostat, Soaking Tub, Sound System, Speakers, Walk-In Closet(s), Wired for Sound
  • exteriorfeatures: Garden, Lighting, Rain Gutters
  • windowfeatures: Double Pane Windows, Drapes, Blinds, ENERGY STAR Qualified WIndows
  • architecturalstyle: Colonial
  • rooms: Dining Room, Bathroom 3, Bedroom 2, Bedroom 1, Bedroom 4, Bathroom 1, Bathroom 2, Bedroom 3, Basement
  • securityfeatures: Security Lighting
  • utilities: Cable Available
  • patioandporchfeatures: Porch, Deck, Patio
  • basement: Partially Finished, Unfinished, Storage Space
  • dock: False
  • poolprivateyn: False
  • spayn: False
  • fencing: Fenced
  • internetaddressdisplayyn: True
  • internetautomatedvaluationdisplayyn: False
  • internetconsumercommentyn: False
  • location: -73.64907, 40.846104
  • customfields: {"AdditionalInformation":{}, "AlternatePrices":[], "BrokerName":"The Greene Realty Group", "BuilderEmail":null, "BuilderFax":null, "BuilderPhone":null, "City":null, "Country":null, "CustomSourceId":null, "Expenses":[], "GeocodeOptions":null, "LeadRoutingEmail":"office@thegreenerealtygroup.com", "ListBrokerageCity":"Worcester", "ListBrokerageCountry":"US", "ListBrokerageEmail":"dgreene@thegreenerealtygroup.com", "ListBrokerageLogoUrl":null, "ListBrokerageName":"The Greene Realty Group", "ListBrokeragePhone":"(508) 517-4908", "ListBrokeragePostalCode":"01602", "ListBrokerageStateOrProvince":"MA", "ListBrokerageUnitNumber":null, "ListBrokerageUnparsedAddress":"4 Field Way", "ListBrokerageWebsiteUrl":"http://www.TheGreeneRealtyGroup.com", "ListOfficeAddress1":"4 Field Way ", "ListOfficeAddress2":null, "ListOfficeBrokerMlsId":"DERK01", "ListOfficeCity":"Worcester", "ListOfficeCountry":"US", "ListOfficeEmail":"dgreene@thegreenerealtygroup.com", "ListOfficePostalCode":"01602", "ListOfficeStateOrProvince":"MA", "ListPriceCurrencyType":"USD", "ListingTitle":"SINGLE_FAMILY - Colonial - Sea Cliff, NY", "ListingURL":"https://www.realtor.com/realestateandhomes-detail/18-20th-Ave_Sea-Cliff_NY_11579_M44894-35290?f=listhub&s=MLSLINY&m=1039834&c=rexren", "MLSModificationTimestamp":"2026-08-19 09:01:38", "Neighborhoods":[], "PostalCode":null, "RoomCount":12, "StateOrProvince":null, "Taxes":[{"TaxAnnualAmount":17211, "TaxDescription":null, "TaxYear":"2025"}], "UnitNumber":null, "UnparsedAddress":null}
Listing Changed: 8/19/2026 9:14:34 AM GMT
Source Updated Date: 8/22/2026 12:47:50 AM GMT

Courtesy of: Derek J. Greene, Greene Realty Group, office@thegreenerealtygroup.com

Copyright © 2026 OneKey MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.