Nassau County and Oyster Bay Town property record for 21 Serenite Ln, Syosset, NY 11791
| Property Type | Single Family Home |
|---|---|
| Details | 6 ba · 6,203 sqft · built 1986 |
| Lot Size | 2.81 acres (122,578 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,750,000 (Sep 2001) |
| Tax Bill | $48,747 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 16-00A-00-0988-A |
| Primary APN | 16-00A-00-0988-A |
|---|---|
| Alternative APNs |
|
| Full Baths | 6 Baths |
|---|---|
| Half Baths | 2 Half Baths |
| Plumbing Fixtures | 4 Plumbing Fixtures |
| Total Rooms | 13 Rooms |
| Stories | 1 Story |
| Building Area | 6,203 sqft Living Area |
| Gross Area | 7,083 sqft |
| 1st Floor Area | 4,351 sqft |
| Game Room | Game Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 1986 |
| Architectural Style | Ranch |
| Exterior Material | Brick/Stone |
| Construction Type | Frame |
| Roof Material | Other |
| Lot Area | 122,578 sqft |
| View / Lot | Cul-De-Sac |
| Garage Type | Attached |
| Garage Area | 880 sqft |
| Parking Spaces | 4 Parking Spaces |
| Pool Area | 560 sqft |
|---|---|
| Porch | Open Frame Porch |
| Porch Area | 52 sqft |
| Deck Area | 255 sqft |
| Patio Area | 958 sqft |
| Balcony Area | 88 sqft |
| Tennis Court | Tennis Court |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 16 A 0988A |
|---|---|
| Street Address | 21 SERENITE LN |
| City | SYOSSET |
| State | NY |
| Zip | 11791-2333 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | 988A-988B |
| Legal Block | A |
| Legal Lot Number | 988 |
| Jurisdiction | NASSAU NY |
| Township / Civil Division | OYSTER BAY |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 517701 |
Source: Nassau County and Oyster Bay Town records, as of June 17, 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 | 21 SERENITE LN, SYOSSET, NY 11791-2333 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 5, 2001 · Amount on Record |
| Deed Sale | Sep 5, 2001 · Amount on Record |
| Deed Book / Page | 11375 / 887 |
| Record Updated | Sep 20, 2026 |
Source: Nassau County and Oyster Bay Town assessment roll, as of June 17, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Nassau County |
| County Subdivision | Oyster Bay Town |
| Municipality | Muttontown Village |
| Unified School District | Oyster Bay-East Norwich Central School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $2,294 (-23.48%) Land $768 Building $1,526 | $2,294,000 (-23.48%) | |
| 2025 | $48,747.00 (-7.47%) | ||
| 2023 | $52,681.00 Additional exemption filed | $2,998 Land $1,004 Building $1,994 | $2,998,000 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
Source: FEMA National Flood Hazard Layer, effective April 5, 2023 · 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 Claims | 3 (1983–1984) |
| Claims Outside the SFHA | 3 of 3 |
| Most Recent Claim | May 1984 · tidal / storm surge |
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 | 0.02% 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 | JERICHO WD public/private · serves 58,000 people · EPA ID NY2902831 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Oct 2023 |
| Lead | 2 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Corrosion control Jul 2023 |
| 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 38 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber | 980 / 880 |
| Optimum Cable · Fiber in parts of the area | 940 / 35 |
5G (outdoors only) and 4G LTE
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