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Residential - Vacant LandResidential

21 HARBOR DR

SYOSSET, NY 11791
0
Baths
1,300 ft²
Lot SizeThe size of the land the home sits on, from county records.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$294 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$12 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$12
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$12
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$12,000

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.111 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.89%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential - Vacant Land
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.03
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Oyster Bay Middle SchoolA
Middle · Grades 7–8 · 0.3 mi
H
Oyster Bay High SchoolB+
High · Grades 9–12 · 0.3 mi
E
Theodore Roosevelt School
Elementary · Grades PK–2 · 0.8 mi

District: Oyster Bay-East Norwich Central School District

Neighborhood · ZIP 11791These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.58
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.92

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.25,701
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,064 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$180,785
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$232,702
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

21 Harbor Dr measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Among the smallest lots in Syosset 11791

How it measures up in Syosset 11791

The dot is this home. The mark in the middle is the typical home in Syosset 11791.

Lot size1,300 ft²
SmallerTypical 0.22 acBigger

Smaller than almost all homes nearby

How 21 Harbor Dr ranks against every home in each area.
MeasureThis homeOyster BaySyosset 11791Nassau County
Lot sizebigger than1,300 ft²almost no homesalmost no homesalmost no homes

About 21 Harbor Dr

When did 21 Harbor Dr, Syosset, NY last sell?

21 Harbor Dr, Syosset, NY last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 21 Harbor Dr, Syosset, NY?

21 Harbor Dr, Syosset, NY is assigned to Oyster Bay Middle School (middle), rated A; Oyster Bay High School (high), rated B+; Theodore Roosevelt School (elementary). All sit in Oyster Bay-East Norwich Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

What are the property taxes on 21 Harbor Dr, Syosset, NY?

The 2025 property tax bill for 21 Harbor Dr, Syosset, NY was $294. The county assessed it at $12.

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