Suffolk County and Brookhaven Town property record for 23 Grassmere Dr, Mastic Beach, NY 11951
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.29 acres (12,632 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $6,677 (2024) |
| Deeds & Mortgages | Apr 2018 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 0200-975.00-08.00-006.000 |
| Primary APN | 0200-975.00-08.00-006.000 |
|---|---|
| Alternative APNs |
|
| Lot Area | 12,632 sqft (0.29 acres) |
|---|---|
| View / Lot | Waterfront |
| Account Number | 4003700 |
|---|---|
| Street Address | 23 GRASSMERE DR |
| City | MASTIC BEACH |
| State | NY |
| Zip | 11951-1912 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Block | 5000 |
| Legal Lot Number | 800 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | BROOKHAVEN |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 159515 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Individually Listed | Floyd, William, House listed 1980 · 11 contributing resources · NRIS 71000066 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: Suffolk County and Brookhaven 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 | Company Name on Record |
|---|---|
| Mailing Address | 760 TOWNLINE RD, HAUPPAUGE, NY 11788-2812 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Recording Date | Apr 12, 2018 |
| Property Address | 23 GRASSMERE DR, MASTIC BEACH, NY 11951-1912 |
| Document Number | 0129570526 |
| Book / Page | 012957 / 000526 |
| Instrument Date | Mar 16, 2018 |
| Transaction Type | Transfer |
| Record Updated | Nov 27, 2019 |
| Title Company | NOT AVAILABLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $240.00 |
| Amount Accuracy | Confirmed |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 760 TOWNLINE RD HAUPPAUGE NY 117882812, HAUPPAUGE, NY 11788-2812 |
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 | $1,600 (-) Land $200 Building $1,400 | $333,334 (+11,149.88%) Land $37,736 Building $264,151 | |
| 2024 | $6,677.00 | ||
| 2023 | $1,600 Land $200 Building $1,400 | $2,963 Land $370 Building $2,593 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 58 policies |
| Nearby Flood Policies | 58 in force |
| Nearby Flood Claims | 17 (2011–2024) |
| Claims Outside the SFHA | 1 of 17 |
| Most Recent Claim | Dec 2024 |
| 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 95% of the US · lower than 94% of New York |
|---|---|
| Wildfire Likelihood | 0.02% 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 288 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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