Active · Single Family Residence

27 Castle Road

Piermont, NY 10968

• 4Beds
• 4Baths
• 3,800Sq ft
• 2006Built
• 3.16Acres

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.

Details

Primary Features

County

Rockland County

Price Before Reduction

4195000

Price Reduction Date

2026-09-25T20:29:49+00:00

Property Sub Type

Single Family Residence

Property Type

Residential

Year Built

2006

Location

Area Source

Other

Area Source

Other

Association

no

Building Area Total

5800

Elementary School

William O Schaefer Elementary School

High School

Tappan Zee High School

Middle School

South Orangetown Middle School

School District

South Orangetown

Senior Community

no

View Type

Trees/Woods

Waterfront

no

Interior

Additional Rooms

Media Room

Appliances

Dishwasher, Dryer, Oven, Range, Refrigerator, Washer

Area Units

Square Feet

Attic

None

Basement

yes

Basement Type

See Remarks, Walk-Out Access

Cooling Type

Central Air

Fireplace

yes

Fireplace Features

Electric, Wood Burning

Fireplaces Total

2

Flooring

Wood

Heating Type

Hot Water, Steam

Interior Or Room 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

Rooms Total

14

Spa

no

External

Architectural Style

Mid-Century Modern

Carport

no

Construction Materials

Stone, Stucco, Wood Siding

Exterior Features

Garden

Garage

yes

Garage Spaces

4

Lot Features

Garden, Landscaped, Near Golf Course, Part Wooded, Private, See Remarks, Stone/Brick Wall, Views, Wooded

Lot Size Square Feet

137650

Parking Features

Attached, Garage

Parking Total

4

Patio And Porch Features

Deck, Patio, Porch

Pool Private

no

Property Attached

no

Sewer

Septic Tank

Utilities

Electricity Connected, Natural Gas Connected, Water Connected

Water Source

Public

Window Features

Wall of Windows

Financial

Down Payment Resource

no

Lease Considered

no

Special Listing Conditions

None

Tax Annual Amount

35765

Tax Assessed Value

500400

Tax Source

Municipality

Tax Year

2025

Additional

Mls Status

Active

On Market Date

2026-07-13T00:00:00+00:00

Village

Piermont

Listing courtesy of Richard W Ellis with Ellis Sotheby's Intl Realty · MLS #1017797