20 Knollwood Road, Old Brookville, New York, United States. - Hero Image
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20
Knollwood Road
Old Brookville | New York

Estate Living

To Perfection

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Douglas Elliman - Roslyn
Douglas Elliman - Roslyn
Presented At
$5,995,999
Bedrooms
6
Bathrooms
8
Living
7,314
SQFT
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20 Knollwood Road, Old Brookville, New York, United States. , Old Brookville , New York

20 Knollwood Road - Muttontown, New York

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 [hidden information] 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 [hidden information] 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 [hidden information], 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 [hidden information] 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 [hidden information]. to the imagination
  • with full bathroom and second laundry room to cater to the pool.
A rare offering in Muttontownluxury, privacy, and craftsmanship converge at 20 Knollwood Road.

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Map showing 20 Knollwood Road, Old Brookville, New York, United States.

Property Location

20 Knollwood Road, Old Brookville, New York, United States., Old Brookville New York

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Estimated Monthly Payment $3,160
Monthly Payment Breakdown
Principal & Interest $2,528
Loan Amount $400,000
Total Interest $337,621
Total Cost $737,621
Potential Tax Benefits (United States)
$0 Est. First Year Interest Deduction
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*Based on post-2017 tax law. Actual deductions depend on filing status, itemization, and current tax laws.

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  • Tax Year Information: Tax data shown is based on United States tax year 2025 (fiscal year: January-December), rules effective from 2018 through 2025. Tax laws change frequently and may have been amended since this data was compiled.

Frequently Asked Questions

Common questions about this property

This house at 20 Knollwood Road, Old Brookville, New York, United States features 6 bedrooms with 7,314 square feet of living space.
This property offers 7,314 square feet of living space.
This property is listed at $599,599,900, which equals $81980 per square foot.
This is a house located in Old Brookville, New York. The property is situated in an established neighborhood with convenient access to local amenities and services.
Douglas Elliman - Roslyn

Douglas Elliman - Roslyn

Douglas Elliman - Roslyn

License #10391201017

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Elyse Saltsberg

Elyse Saltsberg

Douglas Elliman - Roslyn

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