100 Horseshoe Road
Mill Neck, NY, 11765 $ 13,250,000
Bedrooms10 Baths10.5 Sq 9,918 Monthly Estimate*
$ 83,662
for $13,250,000 with 10 bedrooms and 10 full baths, 5 half baths. This 9,918 square foot home was built in 1922 on a lot size of 11.67.
La Reserve - A Legendary Gold Coast Estate of Rare Provenance Perched atop one of the North Shore's most commanding elevations, at the end of a mile-long private drive overlooking the iconic Cleft Road Causeway, La Reserve serve stands among the most significant surviving estates of Long Island's storied Gold Coast. Originally commissioned in 1922 by Arthur Vining Davis - financier, industrialist, chairman of the Aluminum Company of America, and once ranked among the wealthiest men in the United States - this extraordinary residence embodies a level of craftsmanship, scale, and historical significance that is virtually impossible to replicate today. Designed by renowned architect Guy Lowell in the Italian Renaissance style, the estate was originally conceived as a grand country retreat for one of America's most influential business titans. The interiors were executed by the celebrated design firm Wm. H. Baumgarten & Co., while the grounds were masterfully designed by legendary landscape architects Ellen Biddle Shipman and Ferruccio Vitale. Their collective vision created a rare synthesis of architecture and landscape that remains remarkably intact and continues to shape the character of the estate today. The property boasts multiple auxiliary structures that provide exceptional flexibility for guests, staff, and extended family. A substantial four-bedroom guest residence offers luxurious accommodations complete with expansive entertaining rooms, a gourmet kitchen, and private wellness amenities. Above the home's five-car garage is a newly redesigned apartment, featuring a seamless open-concept living space with a large great room, two bedrooms, and two full bathrooms. Set amidst nearly 18 acres of meticulously maintained grounds, the cream-colored stucco main residence is crowned by a classic red terracotta tile roof, its elegant proportions recalling the great villas of Northern Italy. Broad rear verandas overlook rolling lawns that descend gracefully toward seasonal water views of Mill Neck Creek and Beaver Lake, creating a serene backdrop of natural beauty and privacy. Encompassing more than 10,000 square feet and comprehensively reimagined approximately 20 years ago, this exceptional residence unfolds across multiple levels of impeccably detailed living space. Rich millwork, marble flooring, intricate hardwood floors, hand-forged iron window details, marble fireplace mantels, Juliet balconies and numerous sets of French doors speak to the extraordinary level of craftsmanship throughout. The first floor features a grand formal living room, a distinguished library/study, and an elegant bar salon designed for refined entertaining. A more recent renovation introduced a spectacular chef's kitchen centered around two massive marble-clad islands and outfitted with a suite of premium Wolf and Sub-Zero appliances, two oversized farmhouse sinks, and limestone tile flooring. The space flows seamlessly into a sunlit breakfast area and adjoining den. The main residence offers seven bedrooms, including private staff quarters, with most bedrooms featuring generous closets, wood-burning fireplaces, and en-suite baths. Beneath the residence lies one of the estate's most remarkable features: a two-level walkout lower level originally created for the enjoyment of one of America's great industrial magnates. The first level includes a richly appointed mahogany bar, kitchenette, game room, screening room, spa facilities, barber shop, gym, map room, vault room and support spaces. Descending further reveals an astonishing private casino complete with its own discreet escape tunnel - a rare and captivating reminder of the estate's glamorous past. The grounds are equally compelling. A gated entrance, extensive stone walls, formal gardens, fountains, comprehensive security systems, and whole-house generators ensure effortless modern living.
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FeaturesInteriorInterior Amenities Built-in Features Cathedral Ceiling(s) Chefs Kitchen Double Vanity Eat-in Kitchen Entrance Foyer Formal Dining Granite Counters High Ceilings His and Hers Closets Kitchen Island Marble Counters Natur
Basement Finished Full Walk-Out Access
Basement Features Finished Full Walk-Out Access
Basement (Y/N) Y
Fireplace Y/N Y
Half Baths 5
Total Bedrooms 10
Total Baths 15
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GeneralSewer Cesspool
Heating Oil
Cooling Central Air
Utilities Propane
Appliances Dishwasher Dryer Gas Cooktop Gas Oven Gas Range Microwave Stainless Steel Appliance(s)
Garage Spaces 7
Architectural Style Estate
Construction Materials Stone Stucco
Year Built 1922
Property Subtype Single Family Residence
Tax Year 2026
Parcel Number 2425-29-L-00-1054-0
County Nassau County
Property Type Residential
HOA N
Garage Y/N Y
Total Rooms 16
Full Baths 10
High School Locust Valley High School
City Oyster Bay
Senior Community Y/N N
High School District Locust Valley
Carport Y/N N
Spa Features Bath
Elementary School Bayville Elementary School
Property Attached Y/N N
Tax Annual Amount 124059
Middle/Junior High School Locust Valley Middle School
Building Area Units Square Feet
Standard Status Active
Middle/Junior School District Locust Valley
Elementary School District Locust Valley
Tax Assessed Value 5925
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ExteriorParking Features Attached Attached
Water Source Public
Spa Y
Building Area Total 12952
Waterfront Y/N N
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* Excluded FeaturesList ByJason P. FriedmanListing Agent
Daniel Gale Sothebys Intl RltyBroker
Affordability Calculator
- Monthly Principal & Interest
- $83,662
- Monthly Property Taxes
- $10,338
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in Mill Neck, NY
Average List Price $5,050,706
Percent of Sale Price 62%
About Mill Neck, NY 850 Population
9% Since 2002
$ 157,456 Median Income
51.89 Median Age
28% Households with Children
Trends Information provided by ATTOM Data Solutions.
4101140 Elementary School
4099618 Middle School
Locust Valley High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 9/10/2026 | $13,250,000 | | Listed Price |