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Street View
$3,995,000
Monthly Est:$19,885
4 Beds
- 4 Baths
4 full baths
3,800sqft
27 Castle Rd, Orangetown, NY 10968
$3,995,000
$19,885/moEst:
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Single Family Residence
Built in 2006
$-- HOA
3.16 acres lot
$1,051/sq.ft
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 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.
- Houzeo last checked: 12 hours ago
- Listing updated: September 25, 2026 at 8:11 pm
- Listing Provided by: Richard W Ellis (914) 393-0438 | Ellis Sotheby's Intl Realty (845) 353-4250
- Source: OneKey MLS-NY as distributed by MLS GRID | MLS#: 1017797

Property Details
Status
Active
Type
Single Family Residence
No. of Stories
-
County
City
Neighborhood
--
Year Built
2006
HOA Fees
-
Finished Area
3,800 sqft
Lot Size
3.16 acres lot
Basement Area
- sqft
MLS Name
OneKey MLS
MLS Number
1017797
MLS Status
Active
Days on Market
112
Cumulative Days on Market
74

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Location
Facts & Features
Rooms
Bedrooms & bathrooms
Bedrooms: 4
Bathrooms: 4
Interior
Appliances
Dishwasher, Dryer, Oven, Range, Refrigerator, Washer
Sewer
Septic Tank
Cooling
Central Air
Heating
Hot Water, Steam
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
Exterior Features
Garden
Window Features
Wall Of Windows
Flooring
Wood
Construction
Year Built
Year Built: 2006
Home type
Single Family Residence
Architectural Style
Mid Century Modern
Construction Materials
Stone, Stucco, Wood Siding
Utilities & Energy
Fireplace Features
Electric, Wood Burning
Basement
See Remarks, Walk Out Access
Water Source
Public
Utilities
Electricity Connected, Natural Gas Connected, Water Connected
Parking Features
Attached, Garage
Other Features
Lot Features
Garden, Landscaped, Near Golf Course, Part Wooded, Private, See Remarks, Stone/brick Wall, Views, Wooded
Patio And Porch Features
Deck, Patio, Porch
Price History
| Date | Event | Price |
|---|---|---|
07/13/2026 Source: | Price Decreased | $3,995,000 -4.77% $1,051/sqft |
07/13/2026 Source: | Listed for Sale | $4,195,000 $1,104/sqft |
Nearby Homes
Find Homes by Property Features in Orangetown, NY
Based on information from OneKey MLS® through Nov 02, 2026, 02:16PM as submitted to and distributed by MLS GRID. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. IDX information is provided exclusively for consumers’ personal non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. The use of the MLS GRID Data may be subject to an end-user license agreement prescribed by the Member Participant’s applicable MLS, if any, and as amended from time to time. © 2026 OneKey MLS. All rights reserved.
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