Suffolk County and Smithtown Town property record for 43 William St, Smithtown, NY 11787
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,493 sqft · built 1954 |
| Lot Size | 0.23 acres (10,019 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $432,500 (Oct 2018) |
| Tax Bill | $13,045 (2024) |
| Deeds & Mortgages | Mar 2021 Refinance Oct 2018 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 473489 134.-2-17 |
| Primary APN | 473489 134.-2-17 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 1 Story |
| Building Area | 1,493 sqft Living Area |
| 1st Floor Area | 1,493 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 2018 |
| Architectural Style | Ranch |
| Exterior Material | Aluminum/Vinyl |
| Foundation Type | No Foundation |
| Lot Area | 10,019 sqft (0.23 acres) |
| Garage Type | Detached |
| Garage Area | 284 sqft |
| Parking Spaces | 1 Parking Space |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Street Address | 43 WILLIAM ST |
|---|---|
| City | SMITHTOWN |
| State | NY |
| Zip | 11787-5611 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | 4-163201 TC-68 *20 LOTS 1 TO 5 INC BIRCHCROFT COLONY BLK X |
| Legal Subdivision | MAP BIRCHCROFT COLONY |
| Legal Block | 2 |
| Legal Lot Number | 17 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | SMITHTOWN |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 135306 |
Source: Suffolk County and Smithtown Town records, as of August 11, 2026
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 43 WILLIAM ST, SMITHTOWN, NY 11787-5611 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Mar 23, 2021 | Deed of Trust, Mortgage · Stand-Alone Refinance NEWREZ LLC |
| Oct 24, 2018 | Deed, Transfer |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 24, 2018 · Amount on Record |
| Deed Sale | Oct 24, 2018 · Amount on Record |
| Deed Book / Page | 12984 / 459 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Property Address | 43 WILLIAM ST, SMITHTOWN, NY 11787-5611 |
| Transaction Type | Mortgage |
| Record Updated | Apr 21, 2026 |
| Name | Verified Name |
|---|
| Document Number | 0232490578 |
|---|---|
| Date | Mar 23, 2021 |
| Book Page | 23249/578 |
| Instrument | DL063284 |
| Name | NEWREZ LLC |
|---|
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount Recorded |
| Document Type | Deed |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Recording Date | Oct 24, 2018 |
| Property Address | 43 WILLIAM ST, SMITHTOWN, NY 11787-5611 |
| Document Number | 0129840459 |
| Book / Page | 12984 / 459 |
| Instrument Date | Oct 4, 2018 |
| Transaction Type | Transfer |
| Record Updated | Aug 20, 2021 |
| Amount | Amount Recorded |
|---|---|
| Tax | $0.00 |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 196 JEFFERSON AVE, SAINT JAMES, NY 11780 |
Source: Suffolk County and Smithtown Town assessment roll, as of August 11, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Smithtown Town |
| Unified School District | Smithtown Central School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $5,011 (-) Land $150 Building $4,861 | $626,375 (+10,776.45%) Land $18,750 Building $607,625 | |
| 2024 | $13,045.00 | ||
| 2023 | $5,011 Land $150 Building $4,861 | $5,759 Land $172 Building $5,587 |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
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 | 2 in force |
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 97% of the US · lower than 96% 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 | SUFFOLK COUNTY WATER AUTHORITY serves 1,100,000 people · EPA ID NY5110526 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jan 2024 |
| Lead | 1 ppb (2025–2027) action level 15 ppb |
| Water Quality | Asbestos resolved · Jul 2020 |
|---|---|
| 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 267 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
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