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$4,195,000
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Property Description
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 duallifts to accommodate 4 vehicles. Climate Control: full zoone heating and central air conitioning 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.
Full Property Details
Full Property Details for 27 Castle Rd
General
- Price: $4,195,000
- Taxes: $35,765
- Status: Active
- Type: Single Family
- Source: Long_Island
- MLS ID: 1017797
- Updated: 7/14/2026
- Added to Site: 47 day(s) ago
Interior
- Number of Rooms: 14
- Interior Features: 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
- Fireplace: Yes
- Number of Fireplaces: 2
- Fireplace(s): Electric, Wood Burning
- Appliances: Dishwasher, Dryer, Oven, Range, Refrigerator, Washer
- Flooring: Wood
Rooms
Bathrooms
- Total Bathrooms: 4
- Full Bathrooms: 4
Bedrooms
- Total Bedrooms: 4
Exterior
- Exterior Features: Garden
- Porch/Patio/Deck: Deck, Patio, Porch
Parking
- Garage: Yes
- Garage Spaces: 4
- Total Spaces: 4
- Parking Features: Attached, Garage
Location
- County: Rockland County
School Information
- High School District: South Orangetown
- Elementary School: William O Schaefer Elementary School
- Middle School: South Orangetown Middle School
- High School: Tappan Zee High School
Heating & Cooling
- Central air: Yes
- Cooling Type: Central Air
- Heating Type: Hot Water, Steam
Utilities
- Sewer: Septic Tank
- Water: Public
- Utility Description: Electricity Connected, Natural Gas Connected, Water Connected
Structural Information
- Architectural Style: Mid-Century Modern
- Detached/Attached: Detached
- Construction: Stone, Stucco, Wood Siding
- Basement: Yes
- Basement Desc.: See Remarks, Walk-Out Access
- Windows: Wall of Windows
- Building Size: 5800
- Square Feet: 5,800
- Sq. Ft. Source: Other
- Year Built: 2006
Lot Features
- Property View: Trees/Woods
- Lot Size (Acres): 3.16
- Lot Size (Sq. Ft.): 137,650
- Lot Features: Garden, Landscaped, Near Golf Course, Part Wooded, Private, See Remarks, Stone/Brick Wall, Views, Wooded
Financial Considerations
- Tax Amount: $35,765
Disclosures and Reports
- Special Conditions: None
- Property ID: 392489-075-013-0001-004-002-0000
Listed by Ellis Sotheby's Intl Realty
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Schools
Schools serving 27 Castle Rd
School District:South Orangetown Central School District
| Name | Grades | Distance |
|---|---|---|
William O Schaefer Elementary School 140 Lester Drive, Tappan, NY 10983 | K-2 | 1.9 mi |
Cottage Lane Elementary School 120 Cottage Lane, Blauvelt, NY 10913 | 3-5 | 2.5 mi |
South Orangetown Middle School 160 Van Wyck Road, Blauvelt, NY 10913 | 6-8 | 2.8 mi |
Tappan Zee High School 15 Dutch Hill Road, Orangeburg, NY 10962 | 9-12 | 1.7 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 27 Castle Rd
Date
Details
Price
Change
Source
7/13/2026
Listed
$4,195,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Tax History
Tax History for 27 Castle Rd
Year
Property Taxes
Change
Tax Assessment
Change
2018
$31,606
6%
$500,400
—
2016
$29,859
-3%
$500,400
—
2017
$30,722
3%
$500,400
—
2016
$29,807
—
$500,400
—
2015
$29,859
3%
$500,400
—
2015
$29,021
1%
$500,400
—
2013
$28,651
—
$500,400
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 27 Castle Rd
27 Castle Road, Piermont, NY 10968 (MLS# 1017797) is a Single Family property with 4 bedrooms and 4 full bathrooms. 27 Castle Road is currently listed for $4,195,000 and was received on July 13, 2026. Want to learn more about 27 Castle Road? Do you have questions about finding other Single Family real estate for sale in Piermont? You can browse all Piermont real estate or contact a Coldwell Banker agent to request more information.
