Rockland County and Orangetown Town property record for 91 William St, Sparkill, NY 10976
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 2,382 sqft · built 1917 |
| Lot Size | 0.469 acres (20,473 sqft) |
| Owner | Individual Name on File |
| Flood Zone | Zone X (minimal risk) |
| APN | 392489 77.08-3-63 |
| Primary APN | 392489 77.08-3-63 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 2,382 sqft Living Area |
| 1st Floor Area | 1,149 sqft |
| 2nd Floor Area | 1,233 sqft |
| Game Room | Game Room |
| Year Built | Built 1917 |
|---|---|
| Architectural Style | Traditional |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 20,473 sqft (0.469 acres) |
| Garage Type | Detached |
| Garage Area | 320 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Porch |
|---|---|
| Porch Area | 571 sqft |
| Patio Area | 572 sqft |
| Shed | 1 Shed |
| Shed Area | 150 sqft |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 0024812 |
|---|---|
| Old Parcel Number | 248907700800030630000000 |
| Street Address | 91 WILLIAM ST |
| City | SPARKILL |
| State | NY |
| Zip | 10976 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-15 |
| Legal Description | 55/66/614/9 |
| Legal Block | 3 |
| Legal Lot Number | 63.000 |
| Jurisdiction | ROCKLAND NY |
| Township / Civil Division | ORANGETOWN |
| Census Block Group | 3 |
| Census Block | 3019 |
| Census Tract | 13402 |
91 William St is owned and occupied by an individual.
Source: Rockland County and Orangetown Town records, as of February 14, 2024
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Individual Name on File |
|---|---|
| Co-owner | Co-owner on File |
| Mailing Address | 91 SPARKILL AVE, TAPPAN, NY 10983-2210 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Jun 7, 2026 |
Source: Rockland County and Orangetown Town assessment roll, as of May 31, 2023
| Type | Name |
|---|---|
| State | New York |
| County | Rockland County |
| County Subdivision | Orangetown Town |
| Unified School District | South Orangetown Central School District (PK - 12) |
| Year | Assessed Value | Assessed Market Value |
|---|---|---|
| 2023 | $234,000 Land $52,700 Building $181,300 | $656,750 Land $147,909 Building $508,841 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 91 William St in Zone X, an area of minimal flood risk, though there have been 33 flood claims nearby since 1979.
Source: FEMA National Flood Hazard Layer, effective August 19, 2025 · 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 |
| Flood Insurance Cost | Premium on File median of 19 policies |
| Nearby Flood Policies | 19 in force |
| Nearby Flood Claims | 33 (1979–2025) |
| Claims Outside the SFHA | 12 of 33 |
| Most Recent Claim | Jan 2025 · other causes |
| Claims by Event |
|
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.
Wildfire risk around 91 William St is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · above 54% of New York |
|---|---|
| Wildfire Likelihood | 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 | VEOLIA WATER NEW YORK private · serves 270,000 people · EPA ID NY4303673 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Mar 2023 |
| Lead | 3 ppb (2026) 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 203 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 | 980 / 880 |
| T-Mobile Fixed Wireless | 100 / 20 |
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