Suffolk County and Brookhaven Town property record for 155 Chestnut St, Mount Sinai, NY 11766
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,540 sqft · built 1986 |
| Lot Size | 1 acre (43,560 sqft) |
| Owner | Individual Name on File |
| Last Sale | $203,000 (May 1997) |
| Tax Bill | $13,712 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 0200-209.00-03.00-005.005 |
| Primary APN | 0200-209.00-03.00-005.005 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 2,540 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 1986 |
| Exterior Material | Wood |
| Lot Area | 43,560 sqft |
| View / Lot | Waterfront |
| Heating System | Forced Air with A/C |
|---|
| Account Number | 1142819 |
|---|---|
| Street Address | 155 CHESTNUT ST |
| City | MOUNT SINAI |
| State | NY |
| Zip | 11766-2330 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | O L SCHWENKE 398 35 125X359 PT LOT |
| Legal Subdivision | SCHWENCKE O L |
| Legal Block | 9000 |
| Legal Lot Number | 300 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | BROOKHAVEN |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 158306 |
155 Chestnut St is owned and occupied by an individual who acquired it in April 2012.
Source: Suffolk County and Brookhaven Town records, as of August 11, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 155 CHESTNUT ST, MOUNT SINAI, NY 11766-2330 |
| 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 | May 12, 1997 · Amount on File |
| Deed Sale | May 12, 1997 · Amount on File |
| Prior Sale | Feb 24, 1995 · Amount on File |
| Deed Book / Page | 11829 / 947 |
| Last Transfer Date | Apr 4, 2012 |
| 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 | Mount Sinai Union Free School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $3,600 Land $400 Building $3,200 | $750,000 Land $75,472 Building $603,774 | |
| 2024 | $13,712.00 | ||
| 2023 | $3,600 Land $400 Building $3,200 | $6,667 Land $741 Building $5,926 |
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 155 Chestnut St in Zone X, an area of minimal flood risk, though there have been 5 flood claims nearby since 1979.
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 | 5 (1979–1985) |
| Claims Outside the SFHA | 5 of 5 |
| Most Recent Claim | Sep 1985 · Hurricane Gloria |
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 155 Chestnut St is low, with less than 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 99.1% of the US · lower than 99.2% 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 268 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
5G (outdoors only) and 4G LTE
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