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MLS ID KEY1014197Last updated Aug 4, 2026

Single Family

55 Wynn Court

Pending · Oyster Bay · Nassau County, NY 11791

Bedrooms
4 Beds
Bathrooms
4 Baths
Year built
1962
Est. monthly taxes
$3,361.92
Property gallery0 / 44
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About this home

Nestled at the end of a private cul-de-sac in prestigious Muttontown, New York, this magnificent four-bedroom, four-bathroom Colonial sits proudly on two lush, beautifully manicured acres within the Syosset School District. A long, scenic driveway framed by tall Green Giant hedging leads to a breathtaking grand foyer, custom archways, and exquisite ceiling details. The main floor features a dramatic, double-sided natural stone fireplace connecting the formal living room and cozy den, alongside a premium chef's kitchen equipped with a custom copper hood, gas cooktop, and warm radiant heated flooring. For maximum efficiency, a highly functional mudroom entrance offers an abundance of storage to match the deep closets throughout the layout. The upstairs layout is reserved for private relaxation, highlighting a dedicated second-floor laundry room and a luxurious primary bedroom suite boasting expansive walk-in closets and a custom steam shower with radiant heat. The expansive, fully finished basement features a dedicated home gym while still leaving massive additional space for recreation, a media area, or leisure, complete with a code-compliant egress window. The resort-style backyard is an entertainer's dream, featuring a heated in-ground pool with a propane heater, sprawling grounds with ample room for a tennis court, and a spectacular covered backyard portico. Premium infrastructure includes a whole-house Cummins generator, 4-zone climate control, an electric car charging port, buried utility lines, and a newer roof (less than two years old) that covers specifically the primary bedroom section and the backyard portico.

Listing snapshot

Days on site
59 days
Listed on MLS
Jun 18, 2026
Full baths
4
Half baths
0
Annual property tax (MLS)
$40,343
Tax year
2026
Area source (MLS)
Public Records
Listing brokerage
Signature Premier Properties
MLS ID
KEY1014197
Last updated
Aug 4, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
1962
Garage
Yes
Garage spaces
2
Parking
Driveway, Garage
Water source
Public
Sewer
Cesspool
Utilities
Electricity Connected, Water Connected

Interior features

Basement
Finished, Full, Storage Space
Heating
Baseboard, Oil, Radiant
Cooling
Central Air
Interior
First Floor Bedroom, First Floor Full Bath, Breakfast Bar, Central Vacuum, Chefs Kitchen, Entrance Foyer, His and Hers Closets, Kitchen Island, Marble Counters, Open Floorplan, Open Kitchen, Primary Bathroom, Master Downstairs, Storage, Walk Through Kitchen, Walk-In Closet(s), Washer/Dryer Hookup
Appliances
Dishwasher, Gas Cooktop, Gas Oven, Microwave, Refrigerator, Stainless Steel Appliance(s), Washer
Flooring
Ceramic Tile, Hardwood
Fireplace
Yes
Fireplaces
1

Exterior features

Architectural style
Colonial
Construction materials
Cedar, Frame
Exterior
Garden
Private pool
Yes

Schools (MLS)

Elementary school
Robbins Lane Elementary School
Elementary school district
Syosset
Middle school
South Woods Middle School
Middle school district
Syosset
High school
Syosset Senior High School
High school district
Syosset

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

Recent activity

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

Location

Oyster Bay · Nassau County, NY 11791Show interactive map
55 Wynn Court

Oyster Bay · Nassau County, NY 11791

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Estimate monthly payment

Loan detailsFixed-rate, fully amortizing loan. Edit the assumptions below; no market rate is supplied.
Property expenses (USD)
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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.