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MLS ID KEY969160Last updated Sep 18, 2026

Single Family

20 Old Stone Road

Active · Clarkstown · Rockland County, NY 10989

Bedrooms
3 Beds
Bathrooms
3 Baths
Year built
1950
Est. monthly taxes
$3,380.16
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About this home

Perched on Hook Mountain West and surrounded by 80 acres of protected parkland and open space, Llama Ridge is among the most private and commanding properties in the Hudson Valley. A short walk from the house, a breathtaking overlook reveals the full sweep of the Hudson River — a view that feels both earned and intimate. This is not simply a home. It is a setting for a life lived with intention: a place to create, to think, or simply to exist within one of the most beautiful natural landscapes in the Northeast. THE ARCHITECTURE: Llama Ridge is the newly completed work of Hudson Valley architect Douglas McClure, built by Eric Bosley. McClure’s guiding concept was a modern reinterpretation of the New England connected farmstead — those rambling 19th- and early 20th-century structures where extended families joined barn and home by breezeway as their lives expanded. The result is a home of remarkable presence. Three crisp, contemporary volumes are arranged along the mountain ridge, each articulated with rows of finely detailed farmhouse windows. With its focus on clean lines and expansive views, the composition is striking from every angle, the geometry of the architecture playing against the organic drama of the landscape. THE INTERIOR: With south and west exposures, Llama Ridge is flooded with natural light throughout the day. The great room — an extraordinary 60-foot expanse anchored by custom tray ceilings that quietly organize the space — becomes a theater of shifting light and shadow as the sun moves across the sky, the slender mullions of the farmhouse windows casting ever-changing patterns on the walls and wide plank oak floors. Tall ceilings, a generous floor plan exceeding 6,100 square feet, and meticulously selected finishes combine to create interiors that feel both grand and intimately livable. Every detail reflects the standard of a premier luxury residence, newly completed and built for lasting distinction. A RICH PROVENANCE: The story of this mountain site is as layered and remarkable as the Hudson Valley itself. A modest Cape-style house and an older barn, believed to significantly predate it, occupied the land around the time of World War II. The barn later found new life as an off-the-beaten-path antique shop, drawing curious visitors up the mountain road in search of hidden treasures. In time, four llamas came to live on the mountain, roaming as a close-knit herd for years and drawing local schoolchildren up the road to meet them. Greenhouses on the northern side of the land were filled with orchids that flourished in this magical microclimate. The stone foundation of one greenhouse remains visible today, quiet evidence of the life this land has held — and perhaps a hint at what it might hold again. THE LOCATION: Llama Ridge borders Upper Nyack and sits within easy reach of some of the region’s most celebrated river towns, including Nyack, Piermont, Irvington, and Tarrytown. New York City is genuinely accessible — 45 minutes by car to Midtown, with convenient mass transit options as well. Llama ridge is a singular property. More than a home, it’s a lifestyle.

Listing snapshot

Days on site
59 days
Listed on MLS
Apr 24, 2026
Full baths
3
Half baths
0
Annual property tax (MLS)
$40,561.89
Tax year
2025
Area source (MLS)
Other
Listing brokerage
Ellis Sotheby's Intl Realty
MLS ID
KEY969160
Last updated
Sep 18, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
1950
Garage
Yes
Garage spaces
3
Parking
Detached, Driveway
Water source
Well
Sewer
Septic Tank
Utilities
Electricity Connected, Water Connected

Interior features

Basement
Crawl Space, Partial
Heating
Baseboard, Forced Air, Radiant
Cooling
Central Air
Interior
First Floor Bedroom, First Floor Full Bath, Chefs Kitchen, Eat-in Kitchen, Entrance Foyer, Formal Dining
Appliances
Dishwasher, Dryer, Oven, Range, Refrigerator, Washer
Flooring
Hardwood
Fireplace
Yes
Fireplaces
1

Exterior features

Architectural style
Barndominium, Contemporary
Construction materials
Frame, Stucco
Exterior
Garden
Private pool
No

Schools (MLS)

Elementary school
Liberty Elementary School
Elementary school district
Nyack
Middle school
Nyack Middle School
Middle school district
Nyack
High school
Nyack Senior High School
High school district
Nyack

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

Clarkstown · Rockland County, NY 10989Show interactive map
20 Old Stone Road

Clarkstown · Rockland County, NY 10989

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Monthly property taxNot provided

Monthly association / maintenance feesNot provided

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