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$5,899,999

  • For Sale
  • Active
  • Single Family
  • 6 Beds
  • 7 Full Baths
  • 1 Partial Bath
  • 3 Car Garage
  • Updated 9 days ago

Next open house:

Open House: 12:00 PM - 2:00 PM

Sunday 5/31 12:00 PM - 2:00 PM

20 Knollwood Road,Brookville, NY 11545

20 Knollwood RoadBrookvilleNY11545

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20 Knollwood Road, Brookville, NYVideo Tour of 20 Knollwood Road, Brookville, NY.
EXCEPTIONAL NEW CONSTRUCTION! Welcome to 20 Knollwood Road, Muttontown in the Jericho School District. Experience the pinnacle of luxury living in this newly built estate, offering approximately 7,000 square feet of refined design and superior craftsmanship by a highly regarded builder. Every inch of this home reflects meticulous attention to detail, from the bespoke millwork and custom paneling to the soaring ceilings and elegant herringbone flooring. A striking custom iron entry door welcomes you into a grand foyer, setting the stage for the home's sophisticated yet inviting ambiance. The chef's kitchen is a showstopper, featuring dual oversized islands, premium Sub-Zero and Wolf appliances, and effortless flow into formal and casual living spaces. Entertain with ease in the formal dining room or at the beautifully appointed wet bar with wine refrigeration. Designed for seamless indoor-outdoor living, French doors open to an expansive porcelain patio and a true resort-style backyard. Enjoy a fully outfitted outdoor kitchen, heated gunite pool with spa, and lush surroundings perfect for entertaining or relaxing in privacy. This impressive residence includes 6 generously sized bedrooms, all with en-suite baths, and a total of 7.5 designer bathrooms. The primary suite offers a luxurious retreat with spa-like finishes. Additional highlights include radiant heated bathroom floors, whole-house generator, central vacuum, Pella windows, circular driveway, and a sprawling lower level complete with a full bath and direct backyard access. A rare offering combining scale, sophistication, and immediate occupancy in one of Long Island's most desirable locations.

Full Property Details for 20 Knollwood Rd

General

  • Price: $5,899,999
  • Status: Active
  • Type: Single Family
  • Source: Long_Island
  • MLS ID: 986988
  • Updated: 5/19/2026
  • Added to Site: 15 day(s) ago

Interior

  • Number of Rooms: 10
  • Interior Features: First Floor Bedroom, First Floor Full Bath, Cathedral Ceiling(s), Central Vacuum, Chefs Kitchen, Crown Molding, ENERGY STAR Qualified Door(s), Entrance Foyer, Formal Dining, High Ceilings, His and Hers Closets, In-Law Floorplan, Kitchen Island, Marble Counters, Open Floorplan, Pantry, Walk-In Closet(s)
  • Number of Fireplaces: 1
  • Fireplace(s): Electric
  • Appliances: Cooktop, Dishwasher, Gas Cooktop, Gas Oven, Gas Range, Refrigerator, Wine Refrigerator
  • Laundry Facilities: Yes
  • Flooring: Hardwood

Rooms

Bathrooms

  • Total Bathrooms: 8
  • Full Bathrooms: 7
  • Half Bathrooms: 1

Bedrooms

  • Total Bedrooms: 6

Other Rooms

  • Laundry: Laundry Room

Additional Information

  • Pool: Yes
  • Private Pool: Yes
  • Pool Description: Fenced, In-Ground, Pool Cover, Pool/Spa Combo
  • Spa: Yes

Exterior

  • Porch/Patio/Deck: Patio

Parking

  • Garage: Yes
  • Garage Spaces: 3
  • Parking Features: Driveway, Garage

Location

  • County: Nassau County
  • Cross Streets: Brookville Road

School Information

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

Heating & Cooling

  • Central air: Yes
  • Cooling Type: Central Air
  • Heating Type: Forced Air, Propane, Radiant Floor
  • Heating Zones: 3

Utilities

  • Sewer: Cesspool
  • Water: Public
  • Utility Description: See Remarks

Structural Information

  • Architectural Style: Colonial
  • Detached/Attached: Detached
  • Construction: Brick
  • Basement: Yes
  • Basement Desc.: Full Basement
  • Sq. Ft. Source: Plans
  • Year Built: 2026

Lot Features

  • Lot Size (Acres): 2
  • Lot Size (Sq. Ft.): 87,120
  • Lot Features: Back Yard, Cul-De-Sac, Front Yard, Landscaped, Level, Sprinklers In Front, Sprinklers In Rear

Financial Considerations

  • Taxes Include: Sewer, Trash

Disclosures and Reports

  • Special Conditions: None
  • Property ID: 2429-16-B-00-1589-0
  • Block: B
  • Lot Number: 1589

Listed by Laffey Real Estate

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Listing agent

— 20 Knollwood Rd —

  • Laffey Real Estate

516-625-0944

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with our affiliated lender
NMLS#: 1598647

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Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

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Schools serving 20 Knollwood Rd

School District:Jericho Union Free School District
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 20 Knollwood Rd Get Price Alerts and Save Property

Date
Details
Price
Change
Source
5/14/2026
Listed
$5,899,999
372%
MLS
4/29/2022
Sold
$1,250,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 20 Knollwood Rd

Year
Property Taxes
Change
Tax Assessment
Change
2025
$27,774
603%
$1,204
—
2024
$3,953
-81%
$1,204
—
2023
$20,945
-14%
$1,204
-13%
2022
$24,223
9%
$1,384
1%
2021
$22,143
19%
$1,365
-9%
2020
$18,645
6%
$1,500
—
2018
$17,631
11%
$1,500
—
2016
$15,835
—
$1,500
-6%
2016
$15,835
-15%
$1,588
6%
2019
$18,645
19%
$1,500
-15%
2016
$15,629
—
$1,764
-11%
2014
$15,671
—
$1,980
-17%
2014
$15,671
—
$2,375
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Estimate the Cost for 20 Knollwood Rd

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*These costs are estimates, and the interest rates assume exceptional credit standing.

Listed by Laffey Real Estate

20 Knollwood Road, Brookville, NY 11545 (MLS# 986988) is a Single Family property with 6 bedrooms, 7 full bathrooms and 1 partial bathroom. 20 Knollwood Road is currently listed for $5,899,999 and was received on May 14, 2026. Want to learn more about 20 Knollwood Road? Do you have questions about finding other Single Family real estate for sale in Brookville? You can browse all Brookville real estate or contact a Coldwell Banker agent to request more information.

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