20 Knollwood Road
Muttontown, NY 11545
- 6 beds
- 7 baths
- 6,250 sqft
- ~2 acre lot
- $1,039 per sqft
- 2025 build
- – on site
Muttontown | Set on over two private acres on a quiet and private 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, three ovens, farmhouse sink, pot filler, warming drawer, and bulter's pantry. 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 Juliette 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. A rare offering in Muttontown—luxury, privacy, and craftsmanship converge at 20 Knollwood Road.
Last checked:
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Last updated Apr 23, 2025
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MLS# 842292 —
The Building
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Year Built:2025
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Basement:true
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Architectural Style:Colonial
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Construction Materials:Brick
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Building Area Units:Square Feet
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Attic:Pull Stairs,Unfinished
Interior
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Living Area:6250
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Total Rooms:10
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Interior Features:First Floor Bedroom, First Floor Full Bath, Breakfast Bar, Built-in Features, Cathedral Ceiling(s), Central Vacuum, Double Vanity, Eat-in Kitchen, Entrance Foyer, Formal Dining, High Ceilings, His and Hers Closets, Kitchen Island, Primary Bathroom, Open Floorplan, Open Kitchen, Pantry, Recessed Lighting, Smart Thermostat, Soaking Tub, Storage, Walk-In Closet(s), Washer/Dryer Hookup, Wet Bar, Wired for Sound
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Living Area Source:Plans
Financial & Terms
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Lease Considered:false
The Property
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Lot Size Acres:2
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Parcel Number:2429-16-B-00-1589-0
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Property Type:Residential
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Property Subtype:Single Family Residence
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Lot Size SqFt:87,120 Sqft
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Property Attached:false
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Property Condition:New Construction
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Waterfront:false
Listing Agent
- Contact info:
- Agent phone:
- (516) 359-2672
- Office phone:
- (516) 621-3555
Taxes
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Tax Year:2023
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Tax Source:Municipality
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Tax Annual Amount:25640.99
Beds
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Total Bedrooms:6
Baths
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Full Baths:6
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Half Baths:1
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Total Baths:7
The Listing
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Special Listing Conditions:None
Heating & Cooling
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Heating:Propane, Radiant Floor
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Cooling:Central Air
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# of Heating Zones:3
Utilities
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Sewer:Cesspool
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Utilities:Electricity Connected, Propane, See Remarks, Water Connected
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Water Source:Public
Appliances
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Appliances:Freezer, Gas Oven, Gas Range, Microwave, Refrigerator, Stainless Steel Appliance(s), Wine Refrigerator
Schools
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High School:Jericho Senior High School
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Elementary School:George A Jackson School
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High School District:Jericho
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Middle School:Jericho Middle School
The Community
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Association:false
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Senior Community:false
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Pool Private:true
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Spa:true
Parking
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Garage:true
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Garage Spaces:2
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Carport:false
Monthly cost estimate

Asking price
$6,499,000
Expense | Monthly cost |
---|---|
Mortgage
This calculator is intended for planning and education purposes only. It relies on assumptions and information provided by you regarding your goals, expectations and financial situation, and should not be used as your sole source of information. The output of the tool is not a loan offer or solicitation, nor is it financial or legal advice. |
$34,800
|
Taxes | $2,136 |
Insurance | $1,787 |
Utilities | $322 See report |
Total | $39,045/mo.* |
*This is an estimate |
Walk Score®
Provided by WalkScore® Inc.
Walk Score is the most well-known measure of walkability for any address. It is based on the distance to a variety of nearby services and pedestrian friendliness. Walk Scores range from 0 (Car-Dependent) to 100 (Walker’s Paradise).
Bike Score®
Provided by WalkScore® Inc.
Bike Score evaluates a location's bikeability. It is calculated by measuring bike infrastructure, hills, destinations and road connectivity, and the number of bike commuters. Bike Scores range from 0 (Somewhat Bikeable) to 100 (Biker’s Paradise).
Soundscore™
Provided by HowLoud
Soundscore is an overall score that accounts for traffic, airport activity, and local sources. A Soundscore rating is a number between 50 (very loud) and 100 (very quiet).
Air Pollution Index
Provided by ClearlyEnergy
The air pollution index is calculated by county or urban area using the past three years data. The index ranks the county or urban area on a scale of 0 (best) - 100 (worst) across the United Sates.
Sale history
Date | Event | Source | Price | % Change |
---|---|---|---|---|
4/23/25
Apr 23, 2025
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Listed / Active | ONEKEY | $6,499,000 |