Westchester County and Ossining Town property record for 9 William St, Ossining, NY 10562 · Last verified May 2026
| Property Type | Duplex |
|---|---|
| Details | 7 bd · 3 ba · 2,772 sqft · built 1872 |
| Lot Size | 0.09 acres (3,920 sqft) |
| Owner | Individual Name on File |
| Last Sale | $220,000 (May 2007) |
| Tax Bill | $8,312 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 554203 97.07-2-36 |
| Primary APN | 554203 97.07-2-36 |
|---|---|
| Alternative APN |
|
| Bedrooms | 7 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 15 Rooms |
| Stories | 3 Stories |
| Building Area | 2,772 sqft Total Area |
| 1st Floor Area | 924 sqft |
| Upper Floors Area | 924 sqft |
| Year Built | Built 1872 |
|---|---|
| Effective Year Built | Effective 1872 |
| Architectural Style | Traditional |
| Exterior Material | Composition/Composite |
| Lot Area | 3,920 sqft (0.09 acres) |
| Lot Dimensions | 73 ft deep x 60 ft wide |
| Garage Type | Detached |
| Garage Area | 368 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Covered Porch |
| Porch Area | 554 sqft |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 9 WILLIAM ST |
|---|---|
| City | OSSINING |
| State | NY |
| Zip | 10562-5490 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Block | 2 |
| Legal Lot Number | 36.000 |
| Jurisdiction | WESTCHESTER NY |
| Township / Civil Division | OSSINING |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 13301 |
Source: Westchester County and Ossining Town records · APN 554203 97.07-2-36
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 | Individual Name on File |
|---|---|
| Mailing Address | 9 WILLIAM ST, OSSINING, NY 10562-5490 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | May 21, 2007 · Amount on Record |
| Deed Sale | May 21, 2007 · Amount on Record |
| Prior Sale | Dec 28, 2001 · Amount on Record |
| Deed Document Number | 2007471340584 |
| Prior Transfer Date | Oct 31, 2006 |
| Prior Transfer Doc | 0471340584 |
| 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 | $8,312.00 | $492,900 (+19.23%) Land $200,300 Building $292,600 | $492,900 (+19.23%) Land $200,300 Building $292,600 |
| 2024 | Homeowner's exemption | $413,400 (+7.38%) Land $109,100 Building $304,300 | $413,400 (+7.38%) Land $109,100 Building $304,300 |
| 2023 | $385,000 Land $109,100 Building $275,900 | $385,000 Land $109,100 Building $275,900 |
Source: FEMA National Flood Hazard Layer, Westchester County (36119C), updated September 18, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 361190133012, refreshed September 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 |
| Flood Insurance Cost | Premium on Record median of 10 individual NFIP policies nearby |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 10 (1991–2012) |
| Most Recent Claim | Oct 2012, tidal / storm surge, Hurricane Sandy |
| Claims By Storm |
|
| 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; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 616 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 |
| Starlink | Satellite (low-earth orbit) | 280 / 30 |
May also be available at this address: Verizon. Availability varies by address; speeds are provider-advertised maximums, not measured.
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