Broad flat moldingsNatural stone wallsJapanese gardens and landscapeSecluded roadDramatic glass-and-steel bridgeBamboo flooring throughoutPremium finishes
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.
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Zillow last checked:
Listing updated:
Listed by:
Ellis Sotheby's Intl Realty845-353-4250,
Richard W Ellis914-393-0438
Source: OneKey® MLS as distributed by MLS GRID,MLS#: 1017797
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
Flooring: Wood
Windows: Wall of Windows
Basement: See Remarks,Walk-Out Access
Attic: None
Number of fireplaces: 2
Fireplace features: Electric, Wood Burning
Interior area
Total structure area: 5,800
Total interior livable area: 3,800 sqft
Property
Parking
Total spaces: 4
Parking features: Attached, Garage
Garage spaces: 4
Features
Patio & porch: Deck, Patio, Porch
Exterior features: Garden
Has view: Yes
View description: Trees/Woods
Lot
Size: 3.16 Acres
Features: Garden, Landscaped, Near Golf Course, Private, See Remarks, Stone/Brick Wall, Views, Wooded
Residential vegetation: Partially Wooded
Details
Parcel number: 39248907501300010040020000
Special conditions: None
Construction
Type & style
Home type: SingleFamily
Architectural style: Mid-Century Modern
Property subtype: Single Family Residence, Residential
Materials
Stone, Stucco, Wood Siding
Condition
Year built: 2006
Utilities & green energy
Sewer: Septic Tank
Water: Public
Utilities for property: Electricity Connected, Natural Gas Connected, Water Connected
Community & HOA
HOA
Has HOA: No
Location
Region: Piermont
Financial & listing details
Price per square foot: $1,104/sqft
Tax assessed value: $500,400
Annual tax amount: $35,765
Date on market: 7/13/2026
Cumulative days on market: 5 days
Listing agreement: Exclusive Right To Sell
Electric utility on property: Yes
Estimated market value
Zestimate®
Not available
Estimated sales range
Not available
Rent Zestimate®
Not available
Price history
Date
Event
Price
7/13/2026
Listed for sale
$4,195,000+599.2%$1,104/sqft
Source: OneKey® MLS as distributed by MLS GRID #1017797Report a problem
All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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Source: OneKey® MLS as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.