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MLS ID KEY1054385Last updated Oct 28, 2026

Single Family

646 The Concourse

Active · Oyster Bay · Nassau County, NY 11771

Bedrooms
3 Beds
Bathrooms
3 Baths
Year built
1957
Est. monthly taxes
$1,327.17

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About this home

Welcome to this Stunning Home Nestled within the Desirable Mill Neck Estates Private Beach Community Reimagined by an Interior Designer with Exceptional Style and Meticulous Attention to Detail. A Gracious Sundrenched Foyer with Radiant Heat Sets the Tone for the Refined Interior, Where the Elegant Living Room, Anchored by a Wood-Burning Fireplace with a Striking Granite Surround and Sonos Sound System, Flows Effortlessly into the Light-Filled Dining Area and Charming Eat-In-Kitchen. The Thoughtfully Appointed Kitchen Features Granite Countertops, Stainless Steel High-End Appliances, Including a Bertazzoni Range and Radiant Heat. Two Well-Appointed Bedrooms and a Sleek Marble Bath Complete the Main Level, While Distinctive Finishes and Impeccable Craftsmanship Lend the Home a Polished and Chic Aesthetic. Occupying the Entire Second Level, the Expansive Primary Suite Provides a Serene Private Retreat Offering Water Views, Featuring A Tray Ceiling, Two Generous Custom Walk-in Closets, and Spacious Bath with Radiant Heat Create a Sense of Comfort and Understated Luxury. The Private Balcony with Water Views Offers an Idyllic Setting for Morning Coffee or Quiet Reflection. The Expansive Lower Level Offers a Beautifully Finished Extension of the Home's Living Space, with a Spacious Open, Inviting Layout Ideal for Relaxing and Entertaining. A Versatile Room Provides Flexibility for a Home Office, Media or Fitness Room While a Full Bath Completes this Level. Abundant Storage and a Convenient Exterior Entrance Adds Functionality, Making this level Ideal for Everyday Living and Guest Accommodations. Step Outside to Mature Trees and Tastefully Landscaped Grounds that Create a Tranquil, Private Setting. Directly accessible from the Kitchen, the Spacious Deck Extends the Living Space Outdoors, Offering an Ideal Venue for Al Fresco Dining and Entertaining. Residents of this Sought After Community Enjoy Private Beach and Mooring Rights, Along with an Exceptional North Shore Lifestyle. A Full House Generac Generator Provides Added Comfort and Peace of Mind. Beautifully Renovated and Move-in-Ready, this Exceptional Three-to-Four Bedroom, Three-Bath Residence Offers a Rare Combination of Sophisticated Design, Comfort and Coastal Living.

Listing snapshot

Days on site
15 days
Listed on MLS
Oct 13, 2026
Full baths
3
Half baths
0
Annual property tax (MLS)
$15,926
Tax year
2025
Association / maintenance fees (MLS)
$2,200 / Annually
Fees include (MLS)
Common Area Maintenance, Snow Removal
Area source (MLS)
Public Records
Listing brokerage
Douglas Elliman Real Estate
MLS ID
KEY1054385
Last updated
Oct 28, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
1957
Garage
Yes
Garage spaces
1
Parking
Driveway, Garage, Garage Door Opener, Heated Garage, Private
Water source
Well, Public
Sewer
Cesspool
Utilities
Cable Connected, Electricity Connected, Natural Gas Connected

Interior features

Basement
Finished, Full, Walk-Out Access
Heating
Natural Gas, Radiant Floor
Cooling
Central Air
Interior
First Floor Bedroom, First Floor Full Bath, Crown Molding, Eat-in Kitchen, Entrance Foyer, His and Hers Closets, Marble Counters, Primary Bathroom, Recessed Lighting, Sound System, Speakers, Storage, Tray Ceiling(s), Walk Through Kitchen, Walk-In Closet(s), Washer/Dryer Hookup
Appliances
Dishwasher, Dryer, Exhaust Fan, Gas Cooktop, Gas Oven, Microwave, Refrigerator, Stainless Steel Appliance(s), Washer, Gas Water Heater
Flooring
Carpet, Ceramic Tile, Hardwood
Fireplace
Yes
Fireplaces
1

Exterior features

Architectural style
Exp Ranch
Construction materials
Other
Exterior
Balcony, Lighting, Mailbox, Mooring, Rain Gutters
Private pool
No

Schools (MLS)

Elementary school
Theodore Roosevelt School
Elementary school district
Oyster Bay-East Norwich
Middle school
Oyster Bay High School
Middle school district
Oyster Bay-East Norwich
High school
Oyster Bay High School
High school district
Oyster Bay-East Norwich

School information is provided by the MLS. Confirm attendance eligibility with the school district.

Recent activity

  1. Listing updated from MLS
  2. First seen on this site
  3. MLS status changed

Location

Oyster Bay · Nassau County, NY 11771Show interactive map
646 The Concourse

Oyster Bay · Nassau County, NY 11771

Google Maps directions

Estimate monthly payment

Loan detailsFixed-rate, fully amortizing loan. Edit the assumptions below; no market rate is supplied.
Property expenses (USD)
MLS amounts are prefilled when available and can be edited. Confirm what fees include. Unknown fee frequencies cannot be converted automatically.Property expenses: MLS values where available; missing values stay blank.

Estimated monthly principal & interest—

Monthly property taxNot provided

Monthly association / maintenance feesNot provided

Estimated monthly total of entered costs—

Excludes insurance, mortgage insurance, special assessments and lender fees. MLS taxes may reflect abatements or exemptions and can change.

Listing data is supplied by the MLS and may change without notice.