Suffolk County and Smithtown Town property record for 21 Gilbert Ave, Smithtown, NY 11787
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1.5 ba · 1,676 sqft · built 1950 |
| Lot Size | 0.52 acres (22,651 sqft) |
| Owner | Individual Name on File |
| Last Sale | $327,000 (Nov 2002) |
| Tax Bill | $13,410 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 473489 135.-2-21 |
| Primary APN | 473489 135.-2-21 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 1,676 sqft Living Area |
| Gross Area | 2,381 sqft |
| 1st Floor Area | 1,676 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Ranch |
| Exterior Material | Aluminum/Vinyl |
| Foundation Type | No Foundation |
| Lot Area | 22,651 sqft (0.52 acres) |
| View / Lot | Suburban |
| Garage Type | Attached |
| Garage Area | 705 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Sewer | Connected |
| Water Source | Commercial |
| Street Address | 21 GILBERT AVE |
|---|---|
| City | SMITHTOWN |
| State | NY |
| Zip | 11787-5307 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | 15-605026 TC-70 *1761 LOT 18 RIDGELY PARK SEC 1 |
| Legal Block | 2 |
| Legal Lot Number | 21 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | SMITHTOWN |
| Census Block Group | 3 |
| Census Block | 3012 |
| Census Tract | 135306 |
21 Gilbert Ave is owned and occupied by an individual who bought it in November 2002.
Source: Suffolk County and Smithtown Town records, as of August 11, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 21 GILBERT AVE, SMITHTOWN, NY 11787-5307 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 20, 2002 · Amount on File |
| Deed Sale | Nov 20, 2002 · Amount on File |
| Deed Book / Page | 12221 / 167 |
| Prior Transfer Date | Sep 23, 1996 |
| Prior Transfer Doc | 1179000221 |
| Record Updated | Sep 20, 2026 |
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 | $5,535 Land $335 Building $5,200 | $691,875 Land $41,875 Building $650,000 | |
| 2024 | $13,410.00 | ||
| 2023 | $5,535 Land $335 Building $5,200 | $6,362 Land $385 Building $5,977 |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
FEMA maps place 21 Gilbert Ave in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 21 Gilbert Ave 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 93% of the US · lower than 89% of New York |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 257 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber | 2,300 / 2,300 |
| T-Mobile Fixed Wireless | 100 / 20 |
Search by:
By searching, you agree to: Terms • Privacy • Disclosures