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21 Half Mile Rd, Armonk, NY 10504
About this home
Redfin Estimate
Market trends in 10504, NY
Last updated September 2026
Buyer's Market
Seller's Market
Seller's market
- NEW 7 HRS AGO$2,250,0005 beds4 baths4,620 sq ft4 Stone Hollow Way, Armonk, NY 10504Listing by Houlihan Lawrence Inc.
- NEW 33 HRS AGO
- $2,400,0004 beds5.5 baths5,139 sq ft10 Cider Mill Cir, Armonk, NY 10504Listing by William Raveis Real Estate
- $1,499,0003 beds2.5 baths3,544 sq ft115 Whippoorwill Rd, Armonk, NY 10504Listing by William Raveis Real Estate
- $5,400,0007 beds8.5 baths11,521 sq ft2 Hollow Ridge Rd, Armonk, NY 10504Listing by Compass Greater NY, LLC
See all
Provided by Redfin
Sale history for 21 Half Mile Rd
Tax history for 21 Half Mile Rd
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Property details
Exterior
- Lot Information
- Land Sq. Ft: 181,618
- Legal Lot Number: 24
- Legal Block Number: 1
- School Tax District: BYRAM HILLS
- Municipality Name: NORTH CASTLE
- Acres: 4.1694
- State Use Description: VACANT RESID
- Utility Information
- Sewer Type: Private
- Water Service Type: Commercial
Financial
- Assessor Information
- Assessment Year: 2025
Public facts
- Beds: —
- Baths: —
- Sq. Ft.: —
- Stories: —
- Lot Size: 4.17 acres
- Style: Vacant Land
- Year Built: —
- Year Renovated: —
- County: Westchester County
- APN: 553800A10700400010240000000
Around this home
Schools
Public 3-5 • Assigned • 1.5mi
Public 6-8 • Assigned • 1.5mi
Public 9-12 • Assigned • 2.6mi
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
Minimal risk of a flood reaching the building in the next 30 years
0.31% chance of being in a wildfire in next 30 years
7 days above 97° expected this year, 15 days in 30 years
26% chance of strong winds in next 30 years
5 unhealthy days expected this year, 7 days in 30 years
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.
Sell confidently with a local market expert in Armonk. 3 minutes to get started.
Nearby similar homes
New listings for sale in 10504
Home values near 21 Half Mile Rd
| Address | Redfin Estimate |
|---|---|
6 Beds | 5.5 Baths | 5308 Sq. Ft. | $1,971,529 |
4 Beds | 4 Baths | 3502 Sq. Ft. | $1,783,918 |
| Address | Redfin Estimate |
|---|---|
- Beds | 4 Baths | 3872 Sq. Ft. | $2,785,172 |
3 Beds | 3.5 Baths | 4362 Sq. Ft. | $2,705,279 |
| Address | Redfin Estimate |
|---|---|
3 Beds | 2 Baths | 1546 Sq. Ft. | $1,343,174 |
- Beds | 3 Baths | 3993 Sq. Ft. | $1,876,884 |
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