Suffolk County and Brookhaven Town property record for 391 Main St, Mastic Beach, NY 11951
| Property Type | Commercial |
|---|---|
| Lot Size | 0.13 acres (5,663 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $5,110 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 0200-980.50-08.00-013.001 |
| Primary APN | 0200-980.50-08.00-013.001 |
|---|---|
| Alternative APNs |
|
| Lot Area | 5,663 sqft (0.13 acres) |
|---|---|
| View / Lot | Waterfront |
| Account Number | 4720150 |
|---|---|
| Street Address | 391 MAIN ST |
| City | MASTIC BEACH |
| State | NY |
| Zip | 11951-3414 |
| Property Category | Commercial |
| Property Type | Commercial > Retail |
| Legal Block | 500 |
| Legal Lot Number | 800 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | BROOKHAVEN |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 159509 |
391 Main St, a commercial property, is owned by an individual.
Source: Suffolk County and Brookhaven Town records, as of August 11, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | PO BOX 935, SHELTER ISLAND, NY 11964-0935 |
| 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 |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Suffolk County and Brookhaven Town assessment roll, as of August 11, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Brookhaven Town |
| Unified School District | William Floyd Union Free School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,300 Land $160 Building $1,140 | $245,283 Land $30,189 Building $215,094 | |
| 2024 | $5,110.00 | ||
| 2023 | $1,300 Land $160 Building $1,140 | $2,407 Land $296 Building $2,111 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 391 Main St in Zone X, an area of minimal flood risk, though there have been 50 flood claims nearby since 1989.
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 | 4 in force |
| Nearby Flood Claims | 50 (1989–2018) |
| Claims Outside the SFHA | 9 of 50 |
| Most Recent Claim | Jul 2018 · 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 391 Main 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 | 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 565 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
May also be available: T-Mobile, Verizon.
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