393 Mill River Road, Muttontown, NY, 11771

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$10,750,000
21 Days On Site

393 Mill River Road
Muttontown, NY 11771

For Sale|Single Family Residence|Active
9
Beds
12
Total Baths
8
Full Baths
4
Partial Baths
13,058
SqFt
$823
/SqFt
1916
Built
County:
Nassau
Listing courtesy of Nest Seekers LLC ShawnElliott@NestSeekers.com

Due to the health concerns created by Coronavirus we are offering personal 1-1 online video walkthough tours where possible.

393 Mill River Road393 Mill River Road393 Mill River Road393 Mill River Road
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Tucked behind a private gated drive and set across over eight pristine acres, this iconic 1916 manor estate has been comprehensively restored and strategically enhanced to meet the expectations of today’s most discerning buyer. Historic architecture remains intact, while modern systems, technology, and amenities have been elevated to a truly exceptional level. Grand formal living and dining rooms feature museum-quality moldings and millwork, offering a refined backdrop for both intimate gatherings and large-scale entertaining. The gourmet kitchen is designed for serious cooking and seamless hosting, flowing naturally into the home’s main living spaces. A striking paneled library with wood-burning fireplace provides a moody, private retreat, while the showstopping 23’ x 44’ great room by Smiros & Smiros commands attention with 16-foot ceilings and a dramatic stone fireplace—engineered for memorable entertaining. The primary suite functions as a true private residence within the home, complete with a separate sitting room, coffee bar, and half bath, a spa-caliber marble bathroom with radiant heated floors, and dual dressing rooms. Five additional en-suite bedrooms, including a fully ADA-accessible suite, along with an office overlooking the gardens, complete the second level. Amenities rival those of a private resort, including a paneled elevator, indoor endless lap pool, catering kitchen, dog spa, a fully refreshed gym, and a discreet panic room / walk-in vault offering an elevated level of security. For the automotive collector, the estate delivers rare flexibility: a heated three-car garage with soaring ceiling heights designed to accommodate lifts for up to six vehicles, complemented by two additional single-car garages. The grounds are equally intentional. A new slate roof, heated gunite pool, Har-Tru tennis court with lighting (recently resurfaced and fenced), putting green, English gardens, playhouse, and curated outdoor lighting create a private, park-like setting designed for year-round enjoyment. Extensive masonry restoration, irrigation repair, landscape clearing, and exterior upgrades have been executed at scale. Behind the scenes, the home has undergone substantial systems modernization, including new and serviced HVAC, complete attic insulation, comprehensive electrical upgrades, restored fireplaces, upgraded pool infrastructure, a fully serviced gate and telecom system, and enterprise-grade security with AI-enabled cameras and property-wide WiFi coverage. The interior has been fully refreshed with newly painted finishes, refinished hardwood floors, custom window screens throughout, and exterior trim replaced with durable Azek for longevity. This is not simply a restored estate—it is a fully realized modern compound, where legacy architecture meets forward-thinking execution

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Listing Snapshot
Price 
$10,750,000
Days On Site 
21 Days
Bedrooms 
9
Inside Area (SqFt) 
13,058 sqft
Total Baths 
12
Full Baths 
8
Partial Baths 
4
Lot Size 
8.17 Acres
Year Built 
1916
MLS® Number 
945312
Status 
Active
Property Tax 
$97,836.79
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
N/A
Friends & Family
Recent Activity
3 weeks agoListing first seen on site
3 weeks agoListing updated with changes from the MLS®
General Features
Acres 
8.17
Attached Garage 
Yes
Cross Street 
Woodstock Ct
Garage 
Yes
Garage Spaces 
5
Parking 
AttachedHeated Garage
Property Sub Type 
Single Family Residence
Security 
Security GateSecurity System
Sewer 
Cesspool
SqFt Total 
13082
Style 
Estate
Utilities 
Natural Gas AvailableNatural Gas Connected
Water Source 
Public
Interior Features
Appliances 
Gas RangeWine Refrigerator
Basement 
FinishedWalk-Out Access
Cooling 
Central Air
Fireplace 
Yes
Fireplaces 
7
Flooring 
CarpetHardwoodTile
Heating 
Forced AirNatural GasRadiant
Interior 
Breakfast BarBuilt-in FeaturesCathedral Ceiling(s)Crown MoldingEat-in KitchenElevatorHis and Hers ClosetsTray Ceiling(s)
Spa 
Yes
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Exterior Features
Construction Details 
Brick
Pool Features 
Private
Private Pool 
Yes
Spa 
Yes
Community Features
MLS Area 
Muttontown
School District 
Oyster Bay-East Norwich
Schools
School District
Oyster Bay-East Norwich
Elementary School
Theodore Roosevelt School
Middle School
Oyster Bay High School
High School
Oyster Bay High School
Listing courtesy of Nest Seekers LLC ShawnElliott@NestSeekers.com


Based on information submitted to the MLS GRID as of 2026-01-25 07:35 AM EST. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

Neighborhood & Commute
Source: Walkscore
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