Suffolk County and Smithtown Town property record for 40 William St, Smithtown, NY 11787 · Last verified August 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 2 Baths |
| Architecture Style | Colonial |
| Year Built | Built 1947 |
| Square Footage | 1,956 sqft Living Area |
| Lot Size | 10,019 sqft (0.23 acres) |
| Occupancy | Owner Occupied |
| Tax Bill | $13,258.00 (2024) |
Source: Suffolk County and Smithtown Town records · APN 473489 134.-2-24
Assessment roll updated August 11, 2026 · Last verified August 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 | 40 WILLIAM ST, SMITHTOWN, NY 11787-5613 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | Oct 19, 2015 |
| Transfer Doc | 0128500800 |
| Record Refreshed | Sep 20, 2026 |
Source: Suffolk County and Smithtown Town records · Assessment roll updated August 11, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Smithtown Town |
| Unified School District | Smithtown Central School District (KG - 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 | $5,474 (-) Land $150 Building $5,324 | $684,250 (+10,774.92%) Land $18,750 Building $665,500 | |
| 2024 | $13,258.00 | ||
| 2023 | $5,474 Land $150 Building $5,324 | $6,292 Land $172 Building $6,120 |
Source: FEMA National Flood Hazard Layer, Suffolk County (36103C), 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 |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | 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.
| Primary APN | 473489 134.-2-24 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Building Area | 1,956 sqft Living Area |
| Gross Area | 2,172 sqft Gross Area |
| 1st Floor | 1,324 sqft 1st Floor |
| 2nd Floor | 632 sqft 2nd Floor |
| Stories | 2 Stories |
| Fireplace | Fireplace |
| Fireplaces | 1 Fireplaces |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 1947 |
| Architectural Style | Colonial Style |
| Exterior Material | Wood Exterior |
| Lot Area | 10,019 sqft (0.23 acres) |
| Porch | Covered Porch |
| Porch Area | 432 sqft Porch |
| View | Suburban View |
| Heating System | Hot Water Heating |
|---|---|
| Heating Fuel | Oil Heating Fuel |
| Sewage | Sewage Connected |
| Water Source | Commercial Water Source |
| Street Address | 40 WILLIAM ST |
|---|---|
| City | SMITHTOWN |
| State | NY |
| Zip | 11787-5613 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | 4-161976 TC-68 *20 LOTS 26 TO 30 INBIRCHCROFT COLONY BLK P |
| Legal Subdivision | BIRCHCROFT COLONY |
| Legal Block | 2 |
| Legal Lot Number | 24 |
| Jurisdiction | SUFFOLK NY |
| Minor Civil Division | SMITHTOWN |
| Census Blockgroup | 3 |
| Census Block | 3003 |
| Census Tract | 135306 |
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