18 20th Avenue

Sea Cliff, NY
$ 1,699,900 Beds 4 Baths 2.5 Sq 2,022
Monthly Estimate* How much can I afford?

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.

Single Family

  • Price
  • $ 1,699,900
  • City
  • Sea Cliff
  • Bedrooms
  • 4
  • Full Bathrooms
  • 2
  • County
  • NASSAU
  • Half Bathrooms
  • 1
  • Area
  • Lot Size
  • 33 Acres
  • Zip
  • 11579
  • Sqr Footage
  • 2,022
  • Year Built
  • 1898
  • Taxes
  • $ 17211
  • Style
  • Colonial
  • MLS#
  • 1039834
Listed By: Greene Realty Group
Data Source: Listings courtesy of OneKey® MLS as distributed by MLS GRID

Features

General

Sewer Septic Tank
Heating ENERGY STAR Qualified Equipment,Forced Air,Hot Water,Natural Gas,Radiant,Radiant Floor
Cooling Central Air,ENERGY STAR Qualified Equipment
Utilities Cable Available,Cable Connected,Electricity Available,Electricity Connected,Natural Gas Available,Natural Gas Connected,Trash Collection Public,Water Available,Water Connected
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,G
Garage Spaces 2
Patio/Porch Features Deck,Patio,Porch
Architectural Style Colonial
Security Features Building Security,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 2025
Parcel Number 2423-21-163-00-0888-0
County Nassau County
Property Type Residential
HOA No
Garage Y/N Yes
Total Rooms 12
Full Baths 2
Directions Prospect Ave to 20th Ave
High School North Shore Senior High School
City Oyster Bay
Senior Community Y/N No
High School District North Shore
Carport Y/N No
Spa Features Bath
Elementary School Sea Cliff Elementary School
Property Attached Y/N No
Tax Annual Amount 17211
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
PostalCity Sea Cliff
AttributionContact 888-278-5840
Listing 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

Interior Features

Interior Amenities 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 Wood
Basement Bilco Door(s),Partially Finished,Storage Space,Unfinished
Flooring Hardwood,Tile
Formal Dining Yes
Basement Features Bilco Door(s), Partially Finished, Storage Space, Unfinished
Basement (Y/N) Yes
Window Features Blinds,Double Pane Windows,Drapes,ENERGY STAR Qualified Windows
Half Baths 1
Total Bedrooms 4
Eat-in Kitchen Yes
Total Baths 3
General Features 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
Walk-In Closet Yes
Entrance Foyer Yes

Exterior Features

Exterior 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
Water Source Public
Total Parking 5
Parking Spaces 5
Parking Features Detached, Driveway, Electric Vehicle Charging Station(s), Garage, Garage Door Opener, Oversized
Foundation Details Block,Raised
Waterfront Y/N No
General Features Ext. Garden,Lighting,Rain Gutters

Amenities

  • Foreclosure
  • Views
  • Short Sale
  • New Construction
  • Adult 55+
  • Lease To Own
  • No HOA Fees
  • Furnished
  • Primary On Main
  • Air Conditioning
  • Seller Finance
  • Green
  • Fixer Upper
  • Horse
  • Golf
  • Fireplace
  • Deck
  • Garage
  • Basement
  • Pool

Affordability Calculator

$3,786

Per Month

Based on the average sale price from the Bay Shore, NY office

  • Monthly Principal & interest $2,658
  • Monthly Property Taxes $1,062
  • Monthly Home Insurance $67
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Default based on a 30-year fixed rate of 6.49% 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.

Mortgage calculator provided courtesy of Inside Real Estate.

Schools

Elementary School Sea Cliff Elementary School
Middle School North Shore Middle School
High School North Shore Senior High School

Price History

8/18/2026 Listed $1,699,900

Property vs Zip Code Average in 11579

Price
AVG $1.19M
$1.7M
Taxes
AVG $15,949
$17,211
Year Built
AVG 1936
1898
Visits
AVG 47
29
Data Provided by Inside Real Estate®

Areas That We Cover

18 20th Avenue Sea Cliff, NY is a Single Family Home for sale at $1699900 with 2022 sqft and a lot size of 33 Acres Acre(s). 18 20th Avenue Sea Cliff has 4 bedrooms, 2 baths and was built in 1898. The property's zip code is 11579 which is in Sea Cliff, NY

*Information deemed reliable but not guaranteed.

Financial calculator disclaimer: Default based on a 30-year fixed rate of 6.49% 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.

Mortgage calculator provided courtesy of Inside Real Estate.

All information deemed reliable, but not guaranteed, and should be independently verified. The real estate information and related content displayed on this site is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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Charlette Williams

631-983-4944

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