15 Emmet Drive
Head Of The Harbor, NY 11790
- 11 beds
- 7 baths
- 9,411 sqft
- ~4 acre lot
- $531 per sqft
- 1906 build
- – on site
Step into a world of timeless elegance and unparalleled prestige at The Mallows — the crown jewel of the North Shore and one of the most exclusive waterfront estates in Head of the Harbor Village. Originally commissioned by the illustrious Astor family and masterfully designed by acclaimed architect Charles Platt, this historic masterpiece sprawls across 4+ acres of exquisitely landscaped grounds with over 300 feet of private beachfront on Stony Brook Harbor, offering commanding west-facing sunset views that stretch across the Long Island Sound to Connecticut. This is more than a residence — it’s a statement. A sanctuary where Gilded Age grandeur meets refined modern luxury. From the moment you arrive, you're greeted by an enchanting cobblestone driveway and sweeping limestone patio that set the stage for a resort-style lifestyle. Outdoor amenities rival the finest private clubs—a heated saltwater pool, hot tub, private tennis court, waterfront gazebo, and serene gardens including a vegetable garden and charming chicken coop, all thoughtfully curated for entertaining and tranquility alike. Inside, the estate unfolds with 11 bedrooms, 5.5 bathrooms, and 14 fireplaces, all artfully restored to preserve the home’s stately character while embracing contemporary sophistication. A 3-bedroom guest cottage offers additional space for hosting in luxury. Every inch of this estate speaks to craftsmanship and distinction: soaring 9.5-foot ceilings, rich custom millwork, an elegant library, and a breathtaking glass conservatory off the primary suite, framed by hurricane-rated Marvin windows and doors. A four-season glass room seamlessly extends from the family room, offering panoramic harbor views year-round. Entertain in grandeur with a professional-grade chef’s kitchen equipped with Viking appliances, Sub-Zero refrigeration, and a gas range—adjacent to a formal dining room designed for unforgettable gatherings. Additional luxuries include a three-level elevator, a sprawling wine cellar, and every detail one would expect in a world-class estate. Perfectly positioned just moments from Stony Brook Yacht Club, Avalon Nature Preserve, Stony Brook Village, and LIRR access, this remarkable estate also falls within the award-winning Three Village School District. The Mallows is more than a home — it’s a generational legacy, an iconic waterfront retreat, and a once-in-a-lifetime opportunity to own the most coveted estate on the North Shore.
Last checked:
As a licensed real estate brokerage, Estately has access to the same database professional Realtors use: the Multiple Listing Service (or MLS). That means we can display all the properties listed by other member brokerages of the local Association of Realtors—unless the seller has requested that the listing not be published or marketed online.
The MLS is widely considered to be the most authoritative, up-to-date, accurate, and complete source of real estate for-sale in the USA.
Estately updates this data as quickly as possible and shares as much information with our users as allowed by local rules. Estately can also email you updates when new homes come on the market that match your search, change price, or go under contract.
Checking…
•
Last updated Mar 14, 2025
•
MLS# 835698 —
The Building
-
Year Built:1906
-
Basement:false
-
Architectural Style:Estate
-
Construction Materials:Stucco, Block
-
Patio And Porch Features:Deck, Patio, Porch
-
Building Area Units:Square Feet
-
Exterior Features:Balcony
-
Security Features:Security System
-
Attic:Full
Interior
-
Living Area:9411
-
Total Rooms:24
-
Interior Features:Central Vacuum, Primary Bathroom
-
Fireplaces Total:14
-
Fireplace:true
-
Flooring:Hardwood
-
Living Area Source:Public Records
-
# of Kitchens:3
Financial & Terms
-
Lease Considered:false
The Property
-
Lot Features:Level, Historic District, Sprinklers In Front, Sprinklers In Rear
-
Lot Size Acres:4.1
-
Parcel Number:0801-001-00-01-00-012-000
-
Property Type:Residential
-
Property Subtype:Single Family Residence
-
Lot Size SqFt:178,596 Sqft
-
Property Attached:false
-
Waterfront:true
Listing Agent
- Contact info:
- Agent phone:
- (631) 664-8200
- Office phone:
- (631) 938-1481
Taxes
-
Tax Year:2024
-
Tax Source:Municipality
-
Tax Annual Amount:81692.89
-
Tax Lot:6
Beds
-
Total Bedrooms:11
Baths
-
Full Baths:5
-
Half Baths:2
-
Total Baths:7
The Listing
-
Special Listing Conditions:None
Heating & Cooling
-
Heating:Oil, Forced Air
-
Cooling:Central Air
-
# of Heating Zones:12
Utilities
-
Sewer:Septic Tank
-
Utilities:Cable Available
-
Water Source:Public
Appliances
-
Appliances:Dishwasher, Dryer, Microwave, Oven, Refrigerator, Washer, Oil Water Heater
Schools
-
High School:Ward Melville Senior High School
-
Elementary School:Minnesauke Elementary School
-
High School District:Three Village
-
Middle School:Paul J Gelinas Junior High School
The Community
-
Association:false
-
Senior Community:false
-
Additional Fees:No
-
Pool Features:In Ground
-
Pool Private:true
-
Spa:false
Parking
-
Parking Features:Attached, Driveway, Garage, Off Street, Private
-
Garage:true
-
Garage Spaces:3
-
Carport:false
Monthly cost estimate

Asking price
$4,999,999
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. |
$26,773
|
Taxes | $6,807 |
Insurance | $1,374 |
Utilities | $783 See report |
Total | $35,737/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 |
---|---|---|---|---|
3/14/25
Mar 14, 2025
|
Listed / Active | ONEKEY | $4,999,999 |