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20 Knollwood Road

Muttontown, NY 11545
  • $5,995,999
  • STATUS: Active
  • ON SITE: 271 Days
  • MLS #: 842292
UPDATED: 20 min ago
$5,995,999
  • 6
    BEDS
  • 2
    ACRES
  • 7
    BATHS
  • 1
    1/2 BATHS
  • 7,314
    SQFT
  • $820
    $/SQFT
Neighborhood:
Type:
Single-Family Home
Built:
2025
County:
Area:

School Information

Elementary School:
Middle School:
School District:

Description

Muttontown Brand New Brick Center Hall Colonial | Set on over two private acres on a quiet cul-de-sac, 20 Knollwood Road is an exceptional new construction estate that blends timeless architecture with elevated, modern finishes. With six en-suite bedrooms, soaring 10-foot ceilings on every level, and thoughtfully designed indoor and outdoor spaces, this home is perfectly suited for refined living and grand entertaining. The main level showcases radiant porcelain tile, coffered ceilings, and custom millwork throughout. The kitchen is a true showpiece, featuring two oversized islands with seating and storage, marble countertops, paneled Sub-Zero appliances, a Wolf range and ovens, farmhouse sink, pot filler and more. A formal dining room with wet bar and herringbone floors complements the space, while a powder room finished in striking black marble adds a dramatic touch. The expansive living and entertaining areas flow seamlessly to the outdoors through French doors, opening to a porcelain-tiled patio and a heated Gunite saltwater pool with automatic cover, integrated spa, and lush surroundings. The home includes a full house generator powered by two 1,000-gallon propane tanks, three-zone HVAC, a space for a future elevator, and smart home wiring for speakers, alarm, and surveillance. Upstairs, the primary suite offers a private balcony, dual walk-in closets, and a spa-quality bath with double vanities and Toto fixtures. A junior suite with a Juliet balcony offers additional luxury, while a second-floor laundry room and central vacuum with hidden hose system provide modern convenience. All bedrooms feature en-suite baths, with elegant grey, white, and black marble finishes carried throughout. Additional highlights include a three-car garage with room for car lifts, a mudroom entry, baseboard outlets, flush floor vents, and a 300-pound chandelier motor lift. The home is clad in limestone stucco and brick, with black iron doors and Pella windows offering a sleek, modern exterior. The unfinished lower level leaves over 3,000 sq.ft. to the imagination - with full bathroom and second laundry room to cater to the pool. A rare offering in Muttontown—luxury, privacy, and craftsmanship converge at 20 Knollwood Road.

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© 2026 OneKey MLS. All rights reserved. IDX information is provided exclusively 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. Information is deemed reliable but is not guaranteed accurate by the MLS or Mark Seiden Real Estate Team. Data last updated: 2026-01-19T13:17:19.513.
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20 Knollwood Road Muttontown, NY 11545

  • Price: $5,995,999
  • Status: Active
  • On Site: 271 Days
  • Updated: 20 min ago
  • MLS #: 842292
6
Beds
7
Baths
1
½ Baths
2
Acres
7,314
SQFT
$820
$/SQFT
2025
Built
Neighborhood:
Oyster Bay
County:
Nassau
Area:
Oyster Bay
Elementary School:
George A Jackson School
Middle School:
Jericho Middle School
High School:
Jericho Senior High School
School District:
Jericho
Property Description
Muttontown Brand New Brick Center Hall Colonial | Set on over two private acres on a quiet cul-de-sac, 20 Knollwood Road is an exceptional new construction estate that blends timeless architecture with elevated, modern finishes. With six en-suite bedrooms, soaring 10-foot ceilings on every level, and thoughtfully designed indoor and outdoor spaces, this home is perfectly suited for refined living and grand entertaining. The main level showcases radiant porcelain tile, coffered ceilings, and custom millwork throughout. The kitchen is a true showpiece, featuring two oversized islands with seating and storage, marble countertops, paneled Sub-Zero appliances, a Wolf range and ovens, farmhouse sink, pot filler and more. A formal dining room with wet bar and herringbone floors complements the space, while a powder room finished in striking black marble adds a dramatic touch. The expansive living and entertaining areas flow seamlessly to the outdoors through French doors, opening to a porcelain-tiled patio and a heated Gunite saltwater pool with automatic cover, integrated spa, and lush surroundings. The home includes a full house generator powered by two 1,000-gallon propane tanks, three-zone HVAC, a space for a future elevator, and smart home wiring for speakers, alarm, and surveillance. Upstairs, the primary suite offers a private balcony, dual walk-in closets, and a spa-quality bath with double vanities and Toto fixtures. A junior suite with a Juliet balcony offers additional luxury, while a second-floor laundry room and central vacuum with hidden hose system provide modern convenience. All bedrooms feature en-suite baths, with elegant grey, white, and black marble finishes carried throughout. Additional highlights include a three-car garage with room for car lifts, a mudroom entry, baseboard outlets, flush floor vents, and a 300-pound chandelier motor lift. The home is clad in limestone stucco and brick, with black iron doors and Pella windows offering a sleek, modern exterior. The unfinished lower level leaves over 3,000 sq.ft. to the imagination - with full bathroom and second laundry room to cater to the pool. A rare offering in Muttontown—luxury, privacy, and craftsmanship converge at 20 Knollwood Road.
Exterior Features

Architectural Style Colonial Carport YN No Construction Materials Brick Cross Street Brookville Road Exterior Features BalconyJuliet Balcony Garage YN Yes Lot Features Back YardCul-De-SacFront YardLandscapedSprinklers In Front Parking Features AttachedGarage Pool Features In GroundOutdoor PoolPool CoverPool/Spa ComboSalt Water Pool Private YN Yes Property Attached YN No Waterfront YN No

Interior Features

Appliances FreezerGas OvenGas RangeMicrowaveRefrigeratorStainless Steel Appliance(s)Wine Refrigerator Attic Pull StairsUnfinished Basement Details See RemarksUnfinishedWalk-Out Access Basement YN Yes Cooling Central Air Fireplace Features ElectricFamily Room Fireplace YN Yes Fireplaces Total 1 Interior Features First Floor BedroomFirst Floor Full BathBreakfast BarBuilt-in FeaturesCathedral Ceiling(s)Central VacuumDouble VanityEat-in KitchenEntrance FoyerFormal DiningHigh CeilingsHis and Hers ClosetsKitchen IslandMarble CountersPrimary BathroomOpen FloorplanOpen KitchenPantryRecessed LightingSmart ThermostatSoaking TubStorageWalk-In Closet(s)Washer/Dryer HookupWet BarWired for Sound Laundry Features Gas Dryer HookupIn BasementIn HallLaundry RoomMultiple LocationsWasher Hookup Number Of Heating Zones 3 Rooms Total 10

Property Features

Association YN No Down Payment Resource YN No Heating PropaneRadiant Floor Lease Considered YN No Property Condition New Construction Property Sub Type Single Family Residence Senior Community YN No Sewer Cesspool Spa YN Yes Special Listing Conditions None Tax Annual Amount 25640.99 Tax Source Municipality Utilities Electricity ConnectedPropaneSee RemarksWater Connected Village Muttontown Water Source Public

Listing courtesy of Joseph A. Scavo of Douglas Elliman Real Estate: 516-359-2672
© 2026 OneKey MLS. All rights reserved.


© 2026 OneKey MLS. All rights reserved. IDX information is provided exclusively 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. Information is deemed reliable but is not guaranteed accurate by the MLS or Mark Seiden Real Estate Team. Data last updated: 2026-01-19T13:17:19.513.
 
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