Westchester County and Ossining Town property record for 21 Prospect Ave, Ossining, NY 10562 · Last verified May 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,117 sqft · built 1948 |
| Lot Size | 0.16 acres (6,970 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $360,000 (Jun 2005) |
| Tax Bill | $9,705 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 554203 89.16-7-75 |
| Primary APN | 554203 89.16-7-75 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,117 sqft Living Area |
| 1st Floor Area | 755 sqft |
| Upper Floors Area | 362 sqft |
| Game Room | Game Room |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1948 |
| Architectural Style | Cape Cod |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 6,970 sqft (0.16 acres) |
| Lot Dimensions | 142 ft deep x 50 ft wide |
| Porch | Covered Porch |
| Porch Area | 416 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 21 PROSPECT AVE |
|---|---|
| City | OSSINING |
| State | NY |
| Zip | 10562-4305 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | SURVEY OF PROPERTY TO FAMILY HOMES INC |
| Legal Block | 7 |
| Legal Lot Number | 75.000 |
| Jurisdiction | WESTCHESTER NY |
| Township / Civil Division | OSSINING |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 13402 |
Source: Westchester County and Ossining Town records · APN 554203 89.16-7-75
Assessment roll updated May 14, 2026 · Last verified May 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 File |
|---|---|
| Mailing Address | 21 PROSPECT AVE, OSSINING, NY 10562-4305 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jun 08, 2005 · Amount on Record |
| Deed Sale | Jun 08, 2005 · Amount on Record |
| Prior Sale | Aug 27, 1998 · Amount on Record |
| Deed Document Number | 2005451400181 |
| Record Updated | Jun 08, 2026 |
Source: Westchester County and Ossining Town records · Assessment roll updated May 14, 2026 · Last verified May 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) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $9,705.00 | $530,100 (+23.08%) Land $249,800 Building $280,300 | $530,100 (+23.08%) Land $249,800 Building $280,300 |
| 2024 | Additional exemption filed | $430,700 (+6.9%) Land $154,700 Building $276,000 | $430,700 (+6.9%) Land $154,700 Building $276,000 |
| 2023 | $402,900 Land $154,700 Building $248,200 | $402,900 Land $154,700 Building $248,200 |
Source: FEMA National Flood Hazard Layer, Westchester County (36119C), updated September 18, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 640 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Optimum Communications | Fiber | 8,000 / 8,000 |
| Verizon | Fiber | 2,300 / 2,300 |
| Optimum Communications | Cable | 940 / 35 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
May also be available at this address: Verizon. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
Search by:
By searching, you agree to: Terms • Privacy • Disclosures