David E. Cornwell
Licensed Real Estate Salesperson
REALTOR®
Walton, NY
Office: (607) 865-7000 (607) 437-8941

20 Knollwood Road, Muttontown, NY 11545

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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.

20 Knollwood Road | MLS# 842292

This single family home located at 20 Knollwood Road, Muttontown, NY 11545 is currently listed for sale with an asking price of $5,995,999. This property was built in 2025 and has 6 bedrooms and 7 full and 1 partial baths with 7314 sq. ft. Knollwood Road is located within the Jericho school district. Search Muttontown real estate on david-cornwell.timberlandproperties.com today.

Gallery

Property Features

Property Type: Residential - Single Family
Basement: Yes
Basement: See Remarks, Unfinished, Walk-Out Access
Cooling: Central Air
Fireplaces: 1
Garage: 3
Heating: Propane, Radiant Floor
Home Style: Colonial
Lot Size: 2.00 Acres
Taxes: $25,640
Year Built: 2025

Amenities

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
Marble Counters
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
Balcony
Juliet Balcony

Feature Descriptions

Appliances: Freezer, Gas Oven, Gas Range, Microwave, Refrigerator, Stainless Steel Appliance(s), Wine Refrigerator
Attic: Pull Stairs, Unfinished
Days on Site: 316
Exterior: Brick
Fireplace Features: Electric, Family Room
Fireplace Y/N: Yes
Formal Dining: Yes
GarageY/N: Yes
Heating Zones: 3
Laundry: Gas Dryer Hookup, In Basement, In Hall, Laundry Room, Multiple Locations, Washer Hookup
Lot Features: Back Yard, Cul-De-Sac, Front Yard, Landscaped, Sprinklers In Front
On Market Date: 2025-04-22
Parcel Number: 2429-16-B-00-1589-0
Parking Features: Attached, Garage
Pool Features: In Ground, Outdoor Pool, Pool Cover, Pool/Spa Combo, Salt Water
Rental Term: Monthly
Rooms Total: 10
Sewer: Cesspool
Spa Y/N: Yes
Swimming Pool: Yes
Utilities: Electricity Connected, Propane, See Remarks, Water Connected
Water: Public

Local Schools

High School: Jericho Senior High School
Middle School: Jericho Middle School
Elementary School: George A Jackson School
School District: Jericho

Estimate Your Payment

Estimated Payment

$ 17,230.00 per month $13,344.50 Principal & Interest $2,136.67 Property Tax $1,748.83 Homeowner's Insurance

Change Payment Information

%
years/fixed
yearly
yearly (est.)
(Payments are an estimate and may vary by lender)

Demographics

Listed By / Shown By

Listing By

Agency Name: Douglas Elliman Real Estate
Agency Contact: 516-359-2672

Shown By

Agent Name: David E. Cornwell
Agent Phone: (607) 437-8941
Agency Title: Timberland Properties

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All information is deemed reliable but not guaranteed. All properties are subject to prior sale, change, or withdrawal. Neither broker(s), nor agent(s) shall be responsible for any typographical errors, misinformation, or misprints, and shall be held totally harmless. Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided 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 on this site was last updated 03/04/2026. The listing information on this page last changed on 03/04/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Wed 03/04/2026 5:26:16 AM EST) or Global MLS (last updated Wed 03/04/2026 1:21:53 AM EST) or New York State Alliance MLS (last updated Wed 03/04/2026 2:34:23 AM EST) or Hudson Valley Catskill Region MLS (last updated Wed 03/04/2026 12:11:15 AM EST) or OneKey MLS (last updated Wed 03/04/2026 1:45:01 AM EST). Real estate listings held by brokerage firms other than Timberland Properties may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.

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