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Mary Alice Ruppert
Licensed Associate Real Estate Broker, Career and Business Development Leader
REALTOR®, ABR, AHWD, C2EX, CRB, ePro, GRI, SFR, SRES
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27 Castle Road , Piermont, NY 10968

$4,195,000
  • 27 Castle Road , Piermont, NY 10968 Main Photo

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New to the Market Active
BEDS4 BATHS4 full SQUARE FEET3,800 MLS#1017797
STATUSActive PROPERTY TYPEResidential - Single Family SCHOOLSouth Orangetown

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 s.f. of meticulously planned living space, the estate balances Grand-Scale entertaining with intimate comfort: 1) Main & Upper Levels (3,700 sq ft): 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 sq ft): This level is above-grade on t

27 Castle Road | MLS# 1017797

This single family home located at 27 Castle Road , Piermont, NY 10968 is currently listed for sale with an asking price of $4,195,000. This property was built in 2006 and has 4 bedrooms and 4 full baths with 3800 sq. ft. Castle Road is located within the South Orangetown school district. Search Piermont real estate on mruppert.coachrealtors.com today.

Property Features

Property Type: Residential - Single Family
Basement: Yes
Basement: See Remarks, Walk-Out Access
Cooling: Central Air
Fireplaces: 2
Garage: 4
Heating: Hot Water, Steam
Home Style: Mid-Century Modern
Lot Size: 3.16 Acres
Taxes: $35,765
Year Built: 2006

Amenities

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
Garden

Feature Descriptions

Appliances: Dishwasher, Dryer, Oven, Range, Refrigerator, Washer
Building Area Total: 5800
Exterior: Stone, Stucco, Wood Siding
Fireplace Features: Electric, Wood Burning
Fireplace Y/N: Yes
Flooring: Wood
Formal Dining: Yes
GarageY/N: Yes
Lot Features: Garden, Landscaped, Near Golf Course, Part Wooded, Private, See Remarks, Stone/Brick Wall, Views, Wooded
On Market Date: 2026-07-13
Parcel Number: 392489-075-013-0001-004-002-0000
Parking Features: Attached, Garage
Parking Total: 4
Patio And Porch: Deck, Patio, Porch
Rental Term: Monthly
Rooms Total: 14
Sewer: Septic Tank
Special View Info: Trees/Woods
Utilities: Electricity Connected, Natural Gas Connected, Water Connected
Water: Public
Window Features: Wall of Windows
Wooded: Yes

Local Schools

High School: Tappan Zee High School
Middle School: South Orangetown Middle School
Elementary School: William O Schaefer Elementary School
School District: South Orangetown

Listed By / Shown By

Listing By

Agency Name: Ellis Sotheby's Intl Realty
Agency Contact: 845-353-4250

Shown By

Agent Name: Mary Alice Ruppert
Agent Phone: Cell: (631) 424-4639
Agency Title: Howard Hanna | Coach Realtors

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Estimated Payment

$ 22,219.69 per month $18,015.73 Principal & Interest $2,980.42 Property Tax $1,223.54 Homeowner's Insurance

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 07/14/2026. The listing information on this page last changed on 07/14/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Tue 07/14/2026 8:51:46 AM EST) or OneKey MLS (last updated Tue 07/14/2026 8:43:36 AM EST). Real estate listings held by brokerage firms other than Howard Hanna | Coach Realtors may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.

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