Suffolk County and Southampton Town property record for 21 Dover Ave, Mastic, NY 11950
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 680 sqft · built 2006 |
| Lot Size | 0.25 acres (10,890 sqft) |
| Owner | Company Name on Record |
| Last Sale | $120,000 (Oct 1997) |
| Tax Bill | $2,479 (2020) |
| Flood Zone | Zone X (minimal risk) |
| APN | 0900-042.00-03.00-022.000 |
| Primary APN | 0900-042.00-03.00-022.000 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 1 Story |
| Building Area | 680 sqft Living Area |
| 1st Floor Area | 680 sqft |
| Year Built | Built 2006 |
|---|---|
| Effective Year Built | Effective 2006 |
| Architectural Style | Mobile Home |
| Exterior Material | Wood |
| Lot Area | 10,890 sqft (0.25 acres) |
| View / Lot | Below Average |
| Porch | Porch |
| Porch Area | 449 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Heating Fuel | Gas |
| Sewer | Connected |
| Street Address | 21 DOVER AVE |
|---|---|
| City | MASTIC |
| State | NY |
| Zip | 11950 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R40 |
| Legal Description | LD EQ 87 +850 |
| Legal Subdivision | ROSES GROVE |
| Legal Block | 3 |
| Legal Lot Number | 22 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | SOUTHAMPTON |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 190713 |
Source: Suffolk County and Southampton Town records, as of August 11, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 65 OLD DEPOT RD, QUOGUE, NY 11959 |
| Owner Type | Company |
| Vesting | Limited Liability Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 16, 1997 · Amount on Record |
| Deed Sale | Oct 16, 1997 · Amount on Record |
| Deed Book / Page | 11857 / 388 |
| Record Updated | Sep 20, 2026 |
Source: Suffolk County and Southampton Town assessment roll, as of August 11, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Southampton Town |
| Unified School District | Southampton Union Free School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $587,300 (-0.58%) Land $447,400 Building $139,900 | ||
| 2024 | $932,222 (+9.68%) Land $710,159 Building $222,063 | ||
| 2023 | $590,700 Land $447,400 Building $143,300 | $849,928 Land $643,741 Building $206,187 | |
| 2020 | $2,479.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 101 policies |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 101 in force |
| Nearby Flood Claims | 5 (2012–2024) |
| Claims Outside the SFHA | 1 of 5 |
| Most Recent Claim | Jan 2024 · rainfall accumulation |
| 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.
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 | 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 150 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
5G (outdoors only) and 4G LTE
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