Hamlet · Oyster Bay · 2028 tentative roll
Syosset property taxes
257 homes sold here recently. The County valued them anywhere from 40% to 85% of what they sold for.
Free to look. A grievance can’t raise your assessment.
257 recent sales
County value as a share of each sale price
At the same $1.25M price, that’s $494k for one home and $1.06M for another.
- Typical County value
- $719,000
- Homes counted
- 7,883
How Syosset compares
Value
$719k Higher than 71 of 119 hamlets and villages
Bills here run high partly because homes are worth more. That alone doesn’t mean anyone is over-assessed: what counts is how your home compares with similar homes in Syosset.
Valued most like Syosset: Oyster Bay, Sea Cliff, Albertson
Is Syosset assessed evenly?
257 one-to-three family homes in Syosset sold in the 18 months before the County’s valuation date. For the middle sale, the County’s market value was 61.4% of the sale price. That is below 100%, so the County typically valued these homes lower than they sold for.
The County valued 0% of these homes above what they sold for. Values here are about as even as the standard assessors are held to.
- Homes sold and compared
- 257After setting aside 21 unusual sales
- County value as a share of sale price
- 61.4%The middle sale; 100% means the County’s value matched the price
- Valued above their sale price
- 0%
- Evenness of values (COD)
- 10.7The assessors’ standard for homes is 15 or lower; higher means less even
- Price-related differential (PRD)
- 1.010.98 to 1.03 is acceptable; higher favors expensive homes
By sale price
The same sales split into five groups by price. For the cheapest fifth, the County’s value was 67% of the sale price; for the priciest fifth, 60%.
Sale prices come from New York State SalesWeb records, adjusted to the valuation date by the local price trend of +0.6% a month. A ratio study describes Syosset, not your home: one sale can be unusual. It is not an appraisal. Compare your own home or see how every district ranks.
Home values in Syosset
A quarter of homes in Syosset are valued under $628,000 and a quarter over $960,000. A home near the top isn’t over-assessed for that alone; it may simply be larger, newer, or on more land.
| Figure | 5th percentile | 25th percentile | Median | 75th percentile | 95th percentile |
|---|---|---|---|---|---|
| County market value | $511,000 | $628,000 | $719,000 | $960,000 | $1,739,600 |
| Assessed value | $511 | $628 | $719 | $960 | $1,740 |
County market value
- Median
- $719,000
- Middle half
- $628,000–$960,000
- Most homes (5th–95th)
- $511,000–$1,739,600
Assessed value
- Median
- $719
- Middle half
- $628–$960
- Most homes (5th–95th)
- $511–$1,740
How values have moved
Imported rolls cover only one year so far, so this uses the year-by-year values on the County’s own record pages for the 101 homes in Syosset whose records we have retrieved. That is a sample, not every home, so its medians differ from the figures above.
View values by roll year (4 years)
| Roll year | Status | Homes | Median market value | Median assessed value | Change |
|---|---|---|---|---|---|
| 2025 | final | 100 | $652,250 | $612 | No earlier year |
| 2026 | final | 101 | $652,000 | $631 | 0.0% |
| 2027 | final | 101 | $677,039 | $647 | +3.8% |
| 2028 | tentative | 101 | $697,586 | $698 | +3.0% |
Taxes paid in Syosset
We have County payment records for only 75 of the 7,883 homes in Syosset, and they are not a random sample. Among those homes, the median school and general payment recorded for 2026 was $20,129. Treat it as a rough guide, not the area’s typical bill.
View recorded payments by year (6 years)
| Collection year | Homes | Median recurring payment | Change |
|---|---|---|---|
| 2021 | 79 | $15,301 | No earlier year |
| 2022 | 80 | $16,081 | +5.1% |
| 2023 | 80 | $17,060 | +6.1% |
| 2024 | 79 | $18,059 | +5.9% |
| 2025 | 78 | $18,838 | +4.3% |
| 2026 | 75 | $20,129 | +6.9% |
Reading these figures
A median describes Syosset, not your home, which may sit well above or below it for good reasons. The tentative roll can still change before it becomes final. Recorded payments are not a tax bill: exemptions and special districts vary by home. This page summarizes published records and is not an appraisal; verify any figure that matters in the Nassau County Land Records Viewer, and see how these pages are built.
Common questions
How are homes in Syosset assessed?
Nassau assesses one-to-three family homes at the same small fraction of County market value across the county. In Syosset, the median assessed value is $719, which is 0.1% of market value. Your tax bill is calculated from assessed value.
How do I file a property tax grievance in Syosset?
File with Nassau County’s Assessment Review Commission (ARC), online or on paper, during the published window of January 4–March 1, 2027. Filing is free, needs no attorney, and the County states a grievance never raises an assessment. ARC reviews the assessment behind county, town, and school taxes. If your home is in an incorporated village that sets its own assessment, the village holds a separate grievance, usually in February.
See any home’s County record and how it compares.
Look up any home to see the value the County has assigned it. No account, payment, or appeal authorization required.
We have records for every town and city in Nassau County.
School districts serving Syosset
School districts that serve homes in this area. Each has its own summary page.
- Locust Grove/Syosset CSD # 23,756 homes
- Syosset/Syosset CSD # 22,402 homes
- Woodbury/Syosset CSD # 2967 homes
- Cold Spring Harbor School District456 homes
- Jericho School District138 homes
Town of Oyster Bay taxes and grievances · Browse every school district, hamlet, and village
Other hamlets and villages in Oyster Bay
Compare Syosset with its neighbors on the same roll.
Keep reading
Understanding your Nassau County assessment
Market value, assessed value and your bill measure different things. A grievance argues the value behind your assessment is too high.
Choosing comparable sales
Homes like yours in size, type, location and condition. A neighbor’s lower tax bill isn’t evidence.
Nassau County tax grievance deadline
January 4–March 1, 2027, filed with ARC. Don’t count on an extension.