Impressive brick colonial residence built to the highest standards of luxury is tucked away on nearly 3 acres offering a private oasis with a magnificent pool, tennis and extensive, lush landscaping. Incredible construction and quality finishes throughout including soaring ceilings, oversized windows and a wonderful open flow making the 7796sf spacious, and at the same time welcoming. Substantial mill-work, gleaming wood floors and a stunning chef's kitchen that opens to the heart of the home - the sun-filled, two-story family room. First floor executive office. Sumptuous master suite with fireplace and luxurious bathroom. Huge lower level offers endless options. Entertaining is a breeze in this home both indoors and out. A one of a kind offering for all to enjoy. Ideally located only minutes to Armonk and 50 minutes to NYC. Additional Information: Amenities:Tennis,HeatingFuel:Oil Above Ground,ParkingFeatures:3 Car Attached,
Single-familyProperty Type
2001Year Built
2.88 acresLot Size
$472Est. Price/Sq.Ft.
3 spacesParking
Listing by Amy Singer• Houlihan Lawrence Inc.
Bought with Amy Singer• Houlihan Lawrence Inc.
Source:OneKey® MLS as Distributed by MLS Grid #H6114529
Redfin Estimate
$3,769,929
$330K since sold in May 2026$30K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 47.5% higher than the average sale price ($2.56M) of 6 comparable homes.
Impressive brick colonial residence built to the highest standards of luxury is tucked away on nearly 3 acres offering a private oasis with a magnificent pool, tennis and extensive, lush landscaping. Incredible construction and quality finishes throughout including soaring ceilings, oversized windows and a wonderful open flow making the 7796sf spacious, and at the same time welcoming. Substantial mill-work, gleaming wood floors and a stunning chef's kitchen that opens to the heart of the home - the sun-filled, two-story family room. First floor executive office. Sumptuous master suite with fireplace and luxurious bathroom. Huge lower level offers endless options. Entertaining is a breeze in this home both indoors and out. A one of a kind offering for all to enjoy. Ideally located only minutes to Armonk and 50 minutes to NYC. Additional Information: Amenities:Tennis,HeatingFuel:Oil Above Ground,ParkingFeatures:3 Car Attached,
Public Records
Feb 7, 2001
Sold
$1,625,000
$204/sq ft
Public Records
Sep 22, 1999
Sold
$150,000
$19/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$53,344 (+2.0%)
$3,800 + $43,700
$47,500
2025
$52,298 (−1.6%)
$3,800 + $43,700
$47,500
2024
$53,124 (+4.5%)
$3,800 + $43,700
$47,500
2023
$50,860 (+8.1%)
$3,800 + $43,700
$47,500
2022
$47,038 (+9.4%)
$3,800 + $43,700
$47,500
2021
$43,003 (−0.3%)
$3,800 + $41,200
$45,000
2020
$43,128 (−8.7%)
$3,800 + $39,200
$43,000
2019
$47,236
$3,800 + $39,200
$43,000
2018
$3,800 + $43,200
$47,000
2017
$3,800 + $41,200
$45,000
2016
$3,800 + $43,200
$47,000
2014
$3,800 + $43,200
$47,000
2013
$3,800 + $43,200
$47,000
2012
$3,800 + $43,200
$47,000
2011
$3,800 + $47,200
$51,000
2010
$3,800 + $47,200
$51,000
2009
$3,800 + $47,200
$51,000
2008
$3,800 + $47,200
$51,000
Tax history for 839 Mount Kisco Rd
Year
Property tax
Land + Additions
Assessment*
2026
$53,344 (+2.0%)
$3,800 + $43,700
$47,500
2025
$52,298 (−1.6%)
$3,800 + $43,700
$47,500
2024
$53,124 (+4.5%)
$3,800 + $43,700
$47,500
2023
$50,860 (+8.1%)
$3,800 + $43,700
$47,500
2022
$47,038 (+9.4%)
$3,800 + $43,700
$47,500
2021
$43,003 (−0.3%)
$3,800 + $41,200
$45,000
2020
$43,128 (−8.7%)
$3,800 + $39,200
$43,000
2019
$47,236
$3,800 + $39,200
$43,000
2018
$3,800 + $43,200
$47,000
2017
$3,800 + $41,200
$45,000
2016
$3,800 + $43,200
$47,000
2014
$3,800 + $43,200
$47,000
2013
$3,800 + $43,200
$47,000
2012
$3,800 + $43,200
$47,000
2011
$3,800 + $47,200
$51,000
2010
$3,800 + $47,200
$51,000
2009
$3,800 + $47,200
$51,000
2008
$3,800 + $47,200
$51,000
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Property details
Interior
Basement Information
Basement Sq. Ft: 2,257
Basement Type: Full
Bathroom Information
# of Full Baths: 5
Heating & Cooling
Air Conditioning Type: Central
Fireplace Information
# of Fireplaces: 3
Has Fireplace
Exterior
Exterior Information
Physical Condition: Average
Exterior Wall: Brick
Pool Information
Pool Type: Concrete
Has Pool
Property Information
Subdivision Name: DEERFIELD FARMS #2
Living Sq. Ft: 7,980
Ground Floor Sq. Ft: 5,723
Building Sq. Ft: 8,730
Legal Description: M5
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 750
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 125,660
Legal Lot Number: 10
Legal Block Number: 2
School Tax District: BYRAM HILLS
Municipality Name: NORTH CASTLE
Acres: 2.8848
State Use Description: SINGLE FAMILY RESID
Utility Information
Sewer Type: Private
Water Service Type: Private
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: —
Baths: 5.0
Sq. Ft.: 7,980
Stories: —
Lot Size: 2.88 acres
Style: Single Family Residential
Year Built: 2001
Year Renovated: —
County: Westchester County
APN: 553800A10000400020100000000
Home facts updated by county records on Jul 30, 2026
Around this home
Schools
Wampus School
Public 3-5 • Assigned • 1.1mi
10/10
H C Crittenden Middle School
Public 6-8 • Assigned • 1.3mi
9/10
Byram Hills High School
Public 9-12 • Assigned • 1.6mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
5/10 Heat Factor
7 days above 97° expected this year, 15 days in 30 years
6/10 Wind Factor
27% chance of strong winds in next 30 years
4/10 Air Factor
5 unhealthy days expected this year, 7 days in 30 years
Provided by First Street
Historical weather
Armonk, NY • 10504
Average low and high temperatures (°F)
34
21
37
22
53
33
62
43
69
51
81
62
86
68
81
60
76
57
66
46
54
37
39
26
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 8.7 hours in
June and 4.3 hours in December, placing it below the
U.S. average for solar exposure.
8.7 hrs
4.3 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$3.58M – $4.34M
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