Skip to main content

MLS ID KEY1048378Last updated Oct 22, 2026

Single Family

100 Horseshoe Road

Active · Oyster Bay · Nassau County, NY 11765

Bedrooms
10 Beds
Bathrooms
15 Baths
Year built
1922
Est. monthly taxes
$10,338.25
Property gallery0 / 31
Loading photo…Photo unavailable

About this home

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.

Listing snapshot

Days on site
48 days
Listed on MLS
Sep 9, 2026
Full baths
10
Half baths
5
Annual property tax (MLS)
$124,059
Tax year
2026
Area source (MLS)
Public Records
Listing brokerage
Daniel Gale Sothebys Intl Rlty
MLS ID
KEY1048378
Last updated
Oct 22, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
1922
Garage
Yes
Garage spaces
7
Parking
Attached
Water source
Public
Sewer
Cesspool
Utilities
Propane

Interior features

Basement
Finished, Full, Walk-Out Access
Heating
Oil
Cooling
Central Air
Interior
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, Natural Woodwork, Original Details, Pantry, Primary Bathroom, Quartz/Quartzite Counters, Sauna, Soaking Tub, Sound System, Stone Counters, Storage, Walk-In Closet(s), Wet Bar
Appliances
Dishwasher, Dryer, Gas Cooktop, Gas Oven, Gas Range, Microwave, Stainless Steel Appliance(s)
Fireplace
Yes

Exterior features

Architectural style
Estate
Construction materials
Stone, Stucco
Private pool
Yes

Schools (MLS)

Elementary school
Bayville Elementary School
Elementary school district
Locust Valley
Middle school
Locust Valley Middle School
Middle school district
Locust Valley
High school
Locust Valley High School
High school district
Locust Valley

School information is provided by the MLS. Confirm attendance eligibility with the school district.

Recent activity

  1. Listing updated from MLS
  2. First seen on this site
  3. MLS status changed

Location

Oyster Bay · Nassau County, NY 11765Show interactive map
100 Horseshoe Road

Oyster Bay · Nassau County, NY 11765

Google Maps directions

Estimate monthly payment

Loan detailsFixed-rate, fully amortizing loan. Edit the assumptions below; no market rate is supplied.
Property expenses (USD)
MLS amounts are prefilled when available and can be edited. Confirm what fees include. Unknown fee frequencies cannot be converted automatically.Property expenses: MLS values where available; missing values stay blank.

Estimated monthly principal & interest—

Monthly property taxNot provided

Monthly association / maintenance feesNot provided

Estimated monthly total of entered costs—

Excludes insurance, mortgage insurance, special assessments and lender fees. MLS taxes may reflect abatements or exemptions and can change.

Listing data is supplied by the MLS and may change without notice.