Single Family
18 20th Avenue
Active · Oyster Bay · Nassau County, NY 11579
- Bedrooms
- 4 Beds
- Bathrooms
- 3 Baths
- Year built
- 1898
- Est. monthly taxes
- $1,474.92
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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.
Listing snapshot
- Days on site
- 14 days
- Listed on MLS
- Oct 14, 2026
- Full baths
- 2
- Half baths
- 1
- Annual property tax (MLS)
- $17,699
- Tax year
- 2026
- Area source (MLS)
- Appraiser
- Listing brokerage
- Douglas Elliman Real Estate
- MLS ID
- KEY1062551
- Last updated
- Oct 25, 2026
General features
- Property type
- Single Family
- Property subtype
- Single Family Residence
- Year built
- 1898
- Garage
- Yes
- Garage spaces
- 2
- Parking
- Detached, Driveway, Electric Vehicle Charging Station(s), Garage, Garage Door Opener, Oversized
- Water source
- Public
- Sewer
- Cesspool
- Utilities
- Electricity Connected, Natural Gas Connected, Water Connected
Interior features
- Basement
- Bilco Door(s), Partially Finished, Storage Space
- Heating
- Forced Air, Hot Water, Natural Gas, Radiant, Radiant Floor
- Cooling
- Central Air
- Interior
- 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
- Flooring
- Hardwood, Tile
- Fireplace
- No
Exterior features
- Architectural style
- Colonial
- Construction materials
- HardiPlank Type
- Exterior
- Garden, Lighting, Rain Gutters
- Private pool
- No
Schools (MLS)
- Elementary school
- Sea Cliff Elementary School
- Elementary school district
- North Shore
- Middle school
- North Shore Middle School
- Middle school district
- North Shore
- High school
- North Shore Senior High School
- High school district
- North Shore
School information is provided by the MLS. Confirm attendance eligibility with the school district.
Recent activity
- Listing updated from MLS
- First seen on this site
- MLS status changed
Location
Estimate monthly payment
Estimated monthly principal & interest—
Monthly property taxNot provided
Monthly association / maintenance feesNot provided
Estimated monthly total of entered costs—
Listing data is supplied by the MLS and may change without notice.
