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MLS ID KEY1017797Last updated Sep 25, 2026

Single Family

27 Castle Road

Active · Orangetown · Rockland County, NY 10968

Bedrooms
4 Beds
Bathrooms
4 Baths
Year built
2006
Est. monthly taxes
$2,980.42
Property gallery0 / 49
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About this home

KoiHaus, a mid-century modern home on 3.16 acres, tucked away on a secluded road near the banks of the Hudson River—just a stone’s throw from the legendary 1890s McKim, Mead & White masterpiece, Lord’s Castle. This architectural gem is a masterclass in organic design, orchestrating a brilliant dialogue between mid-century modern aesthetics and the spiritual heritage of Japanese landscaping. KoiHaus is more than just a luxury residence; it is a living sanctuary where home and nature exist as one. The landscape is as important as the architectural design. The landscape architect designed the gardens from inside out - thru its 100 windows. There is harmony between the home's natural setting and the architectural design. The home rises from the site line as one approaches it, going past the 13 ft tall steel elephant in the front yard, that moves naturally by the wind. True to the legacy of Frank Lloyd Wright, KoiHaus utilizes clean lines and geometric shapes, that are softened by its Japanese gardens and landscape. The structure is composed of five interconnected boxes, wrapped in an exterior palette of concrete, stucco, stone, and rich hardwood, all capped by a durable, 50-year roof. What truly defines the exterior, however, is its relationship with light. Its many windows of varying shapes and sizes, framing shifting natural portraits throughout the day. Every detail leans into sleek minimalism. Broad, flat moldings complement natural stone walls, while pocket doors are utilized throughout to maximize room volume and echo Japanese sliding screens. Premium finishes include polished bluestone countertops KoiHaus' defining engineering feature is its split-foundation design. Technically it is two independent structures joined by a dramatic glass-and-steel bridge. Beneath this bridge flows a continuous, sprawling koi pond that meanders under and around the house. From almost any vantage point, residents can look out to watch Nishikigoi—the "living jewels" of Japan—swimming gracefully in their natural habitat. In Japanese philosophy, the koi represents perseverance, strength, harmony, and transformation. Spanning approximately 5,800 sqft of meticulously planned living space, the estate balances Grand-Scale entertaining with intimate comfort: 1) Main & Upper Levels (3,700 sqft): Features a massive chef’s kitchen with a vast walk-in pantry, a dining room perfectly positioned for sunset views, and bamboo flooring throughout. 2) Walk-Out Lower Level (2,000 sqft): This level is above-grade on two sides, large fitness room with a wall of windows (could function as another den), home theater, wet bar room and full bath. A hot tub is conviently located outside its back doors. 3) The Annex: A 1,000 sqft semi-finished space w/climate control offers endless options. Currently used as a practice room for the band! 6,800sf total. Property Specifications: Total sqft: 5,800 + 1,000sqft in the annex. Bedrooms, 4 (possible 6 to 7). Baths, 4. Outdoor living, 1,500sqft of premium IPE decking. Garage: 2 car with dual lifts to accommodate 4 vehicles. Climate Control: full zone heating and central air conditioning throughout. The structure was designed by the acclaimed bi-coastal architect Brian Spence, AIA (NYC & LA), and the landscape was designed by renowned Japanese garden expert Asher Browne. While KoiHaus feels like a world unto itself, it is remarkably connected. Located near the historic Hudson Riverfront village of Piermont, it offers from five-star dining, local marinas, vibrant farmers markets, and a pristine 700-acre state park. Commuting is effortlessly simple: it is a mere 6 minutes to the Mario Cuomo Bridge (connecting to Metro-North for a straight shot into Grand Central) and just 15 minutes to the George Washington Bridge into Manhattan. For the connoisseur of art, architecture, and mindful living, it becomes instantly clear upon arrival: KoiHaus. Nothing Compares.

Listing snapshot

Days on site
59 days
Listed on MLS
Jul 13, 2026
Full baths
4
Half baths
0
Annual property tax (MLS)
$35,765
Tax year
2025
Area source (MLS)
Other
Listing brokerage
Ellis Sotheby's Intl Realty
MLS ID
KEY1017797
Last updated
Sep 25, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
2006
Garage
Yes
Garage spaces
4
Total parking
4
Parking
Attached, Garage
Water source
Public
Sewer
Septic Tank
Utilities
Electricity Connected, Natural Gas Connected, Water Connected

Interior features

Basement
See Remarks, Walk-Out Access
Heating
Hot Water, Steam
Cooling
Central Air
Interior
First Floor Bedroom, First Floor Full Bath, Chefs Kitchen, Dry Bar, Eat-in Kitchen, Entrance Foyer, Formal Dining, High Ceilings, Kitchen Island, Pantry, Primary Bathroom, Soaking Tub, Stone Counters, Storage, Washer/Dryer Hookup
Appliances
Dishwasher, Dryer, Oven, Range, Refrigerator, Washer
Flooring
Wood
Fireplace
Yes
Fireplaces
2

Exterior features

Architectural style
Mid-Century Modern
Construction materials
Stone, Stucco, Wood Siding
Exterior
Garden
Private pool
No

Schools (MLS)

Elementary school
William O Schaefer Elementary School
Elementary school district
South Orangetown
Middle school
South Orangetown Middle School
Middle school district
South Orangetown
High school
Tappan Zee High School
High school district
South Orangetown

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

Orangetown · Rockland County, NY 10968Show interactive map
27 Castle Road

Orangetown · Rockland County, NY 10968

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