by RH Advisors

See Home Value
Westchester 10504
21 S Sterling Road
$6,615,000
● House - Off Market

21 S Sterling Road

North Castle, NY 10504
bedrooms
6 Beds
bathrooms
6 Baths, 3 Half Baths
square feet
11,615 Ft²
$41,203
Est. Monthly
0.54%
Cap Rate

About This Property

Where design meets purpose-this award-winning home brings together architectural innovation and serene luxury.  Created by Carol Kurth Architecture and built by Legacy Construction NE, exceptional craftsmanship is seen throughout the home, showcased by a mix of natural materials and bold structural details. A cantilevered fireplace, floating staircases and cathedral ceilings are some of the thoughtfully considered elements found in these elegant and exhilarating interiors. The luxurious offerings in each space include a Bulthaup chef's kitchen, primary suite with two fireplaces and spa, three additional bedrooms with attached lounge and work areas, a guest bedroom on the first floor and a private sun-drenched office. A suite of premium amenities make your everyday a remarkably refreshing experience. The unique  indoor/outdoor pool, with a retractable glass A-frame roof is the signature amenity, while a spa area, indoor basketball and sport court, gym, and theater room complete the collection. Located on one of Armonk's most coveted streets, close to town, schools and highways. This personal sanctuary is also 15 minutes to downtown Greenwich and within an hour of NYC.
Unit Size
11,615 Ft²
Days on Market
76 days
Land Size
2.66 acres
Price per sqft
$598
Property Type
House
Property Taxes
$7,077
HOA Dues
-
Year Built
2006

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Last updated: 2 years ago (OneKey MLS #KEY878389)

Price History

Date / Event Date Event Price
Sep 15, 2025 Sold
Sold
Aug 21, 2025 In contract -
In contract
Jul 1, 2025 Listed by Compass Greater NY, LLC $6,950,000
Listed by Compass Greater NY, LLC
Sep 23, 2024 No longer available -
No longer available
Mar 31, 2024 No longer available -
No longer available
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Property Highlights

Garage
Air Conditioning
Fireplace

Building Info

Overview

    General

  • Year Built: 2006
  • Effective Year Built: 2006
  • Bedroom Count: 0
  • Bathroom Count: 4
  • Full Bathrooms: 4
  • Partial Bathrooms: 4
  • Building Condition: 6
  • Building Quality: 7
  • Construction Type: 0
  • Building Style: 0
  • Exterior Walls Type: 0
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Floor Count: 200
  • Floor Cover: 0
  • Basement Type: 3
  • Basement Area: 2,391
  • Garage Type: 1
  • Garage Square Area: 500
  • Parking Space Count: 2
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 115,870
  • Total Building Area: 11,335
  • Building Area: 11,335
  • Building Area Measurement: L

    Heating and Cooling

  • Fireplace Count: 1
  • Air Conditioning: 1
  • Heating: 0
  • Heated Square Feet: 11,335
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 4
  • Water Service: 5

Building

  • Building Type: 0
  • Property Class: R
  • Land Acres: 0000002660
  • Standard Land Use Code: 1001
  • County Land Use Code: 210

Neighborhood

  • School District Name: Byram Hills Central School District
  • School Tax School District: BYRAM HILLS
  • Census Tract: 012304

Zoning

  • Zoning: R-2A

Geography

  • Account Number: R2A
  • District: 553800
  • Section: 108.04
  • Parcel: 553800 108.04-1-12
  • Block: 1
  • Lot: 12.000
  • Municipality: NORTH CASTLE
  • Latitude: 41.121
  • Longitude: -73.6875

    Address

  • Full Address: 21 Sterling Rd S
  • Address - House Number: 21
  • Street Segment Direction: S
  • Address - Street Name: Sterling
  • Address - Suffix Type: Rd
  • State: NY
  • City Name: Armonk
  • Carrier Code: C004
  • 4-Digit Zip Code: 2422
  • Zip Code: 10504

Valuation

    Tax

  • Tax Year: 2023
  • Tax Amount: $8,100,994
  • Tax Rate Code Area: 553801

    Appraisal Valuation

  • Standard Deviation: 0.4572
  • Valuation Date: Feb 07, 2024
  • Confidence Score: 8
  • Final Value: 848,793
  • High Value: 1,236,865
  • Low Value: 460,720

    Market Valuation

  • Market Total Value: $4,666,667
  • Market Land Value: $200,000
  • Market Improvement Value: $4,466,667

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $77,000
  • Assessed Land Value: $3,300
  • Assessed Improvements Value: $73,700

    Sales

  • Current Sale Contract Date: Sep 09, 2003
  • Current Sale Recording Date: Feb 18, 2004
  • Current Sale Price:
  • Current Sale Document Type: 12
  • Current Sale Input Document Number: 0440160983
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Westchester


Similar Homes for Sale

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Nearby Rentals

Unit for rent at 16 Agnew Farm Road, Armonk, NY, 10504

$10,000 /mo

  • 3 Beds
  • 2 Baths
  • 3,000 ft²
16 Agnew Farm Road, Armonk, NY, 10504 Listing by Amy Smith Sroka


Frequently Asked Questions

When was property at 21 Sterling Road built and last sold?
The property at 21 Sterling Road was built in 2006 and last sold on Sep 9, 2003 for $1,850,000.
How much is this home worth?
The estimated value of the home located at 21 Sterling Road is $0.
What are some comparable homes to 21 Sterling Road?
There are currently no comparable homes to 21 Sterling Road.