Westchester County and Ossining Town property record for 21 Underhill Rd, Ossining, NY 10562
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 2,645 sqft · built 1929 |
| Lot Size | 0.42 acres (18,295 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $800,000 (Jul 2009) |
| Tax Bill | $20,426 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 554203 89.20-3-53 |
| Primary APN | 554203 89.20-3-53 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,645 sqft Living Area |
| 1st Floor Area | 1,252 sqft |
| Attic | Attic |
| Attic Area | 431 sqft |
| Game Room | Game Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1929 |
|---|---|
| Effective Year Built | Effective 1929 |
| Architectural Style | Colonial |
| Exterior Material | Brick |
| Lot Area | 18,295 sqft (0.42 acres) |
| Garage Type | Basement |
| Porch | Covered Porch |
| Porch Area | 528 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 21 UNDERHILL RD |
|---|---|
| City | OSSINING |
| State | NY |
| Zip | 10562-5109 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Block | 3 |
| Legal Lot Number | 53.000 |
| Jurisdiction | WESTCHESTER NY |
| Township / Civil Division | OSSINING |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 13401 |
Source: Westchester County and Ossining Town records, as of May 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 21 UNDERHILL RD, OSSINING, NY 10562-5109 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 15, 2009 · Amount on Record |
| Deed Sale | Jul 15, 2009 · Amount on Record |
| Deed Document Number | 2009491820438 |
| Record Updated | Jun 8, 2026 |
Source: Westchester County and Ossining Town assessment roll, as of May 14, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Westchester County |
| County Subdivision | Ossining Town |
| Municipality | Ossining Village |
| Unified School District | Ossining Union Free School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $20,426.00 | $846,800 (-4.29%) Land $310,500 Building $536,300 | $846,800 (-4.29%) Land $310,500 Building $536,300 |
| 2024 | $884,800 (+7.99%) Land $204,300 Building $680,500 | $884,800 (+7.99%) Land $204,300 Building $680,500 | |
| 2023 | $819,300 Land $204,300 Building $615,000 | $819,300 Land $204,300 Building $615,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective September 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 2 (2011) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Aug 2011 · rainfall accumulation |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 97.9% of New York |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | OSSINING WATER DEPARTMENT serves 30,000 people · EPA ID NY5903451 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jul 2025 |
| Lead | 3 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 490 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
May also be available: T-Mobile.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures