Suffolk County and Brookhaven Town property record for 5 Riverside Ave, Mastic Beach, NY 11951
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.25 acres (10,890 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $1,341 (2024) |
| Flood Zone | Zone AE (high risk) |
| APN | 0200-940.00-05.00-027.000 |
| Primary APN | 0200-940.00-05.00-027.000 |
|---|---|
| Alternative APNs |
|
| Lot Area | 10,890 sqft (0.25 acres) |
|---|---|
| View / Lot | Canal Front |
| Account Number | 4106270 |
|---|---|
| Street Address | 5 RIVERSIDE AVE |
| City | MASTIC BEACH |
| State | NY |
| Zip | 11951-1101 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | MASTIC ACRES |
| Legal Block | 5 |
| Legal Lot Number | 500 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | BROOKHAVEN |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 159512 |
Source: Suffolk County and Brookhaven 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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 5 RIVERSIDE AVE, MASTIC BEACH, NY 11951-1101 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Mar 10, 2014 |
| Transfer Doc | 0127660891 |
| 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 | $1,800 (-) Land $150 Building $1,650 | $375,000 (+11,147.75%) Land $28,302 Building $311,321 | |
| 2024 | $1,341.00 | ||
| 2023 | $1,800 Land $150 Building $1,650 | $3,334 Land $278 Building $3,056 |
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 AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | 7.0 ft |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record median of 30 policies |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 30 in force |
| Nearby Flood Claims | 52 (1978–2024) |
| Claims Outside the SFHA | 5 of 52 |
| 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 98% of the US · lower than 97.9% 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 376 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
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