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Duplex (2 Units, Any Combination)Residential

21 CLARK ST

EAST ROCKAWAY, NY 11518
2
Baths
1,958 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,205 (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.$477 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$185
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$292
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$504
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$477,000

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.60 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.72%
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.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.15
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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.

E
Centre Avenue Elementary SchoolB
Elementary · Grades PK–6 · 0.1 mi
M
East Rockaway Junior-Senior High SchoolA-
Middle · Grades 7–12 · 0.4 mi

District: East Rockaway Union Free School District

Neighborhood · ZIP 11518These 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.119
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.113
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.95

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.10,947
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,163 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$108,669
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$147,163
Average tempThe average temperature here across a full year.54°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 Clark St 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.

  • Bigger than 65% of homes in East Rockaway 11518
  • Older than 95% of homes in Nassau County

How it measures up in East Rockaway 11518

The dot is this home. The mark in the middle is the typical home in East Rockaway 11518.

Living area1,958 ft²
SmallerTypical 1,710 ft²Bigger

Bigger than 65% of homes nearby

Lot size0.15 ac
SmallerTypical 0.14 acBigger

Bigger than 62% of homes nearby

Year built1920
OlderTypical 1941Newer

Newer than 11% of homes nearby

How 21 Clark St ranks against every home in each area.
MeasureThis homeEast Rockaway 11518Nassau County
Living areabigger than1,958 ft²65% of homes63% of homes
Lot sizebigger than0.15 ac62% of homes52% of homes
Year builtnewer than192011% of homes5% of homes

About 21 Clark St

When did 21 Clark St, East Rockaway, NY last sell?

21 Clark St, East Rockaway, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Clark St, East Rockaway, NY?

21 Clark St, East Rockaway, NY has 2 bathrooms, 1,958 square feet of living space and a 0.15-acre lot.

When was 21 Clark St, East Rockaway, NY built?

21 Clark St, East Rockaway, NY was built in 1920, making it 106 years old. The building has 2 stories.

What schools serve 21 Clark St, East Rockaway, NY?

21 Clark St, East Rockaway, NY is assigned to Centre Avenue Elementary School (elementary), rated B; East Rockaway Junior-Senior High School (middle), rated A-. All sit in East Rockaway Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Clark St, East Rockaway, NY compare to other homes in East Rockaway 11518?

Among the 3,435 homes in East Rockaway 11518, it is bigger than 65% of them (1,958 ft² against a typical 1,710 ft²), its lot is bigger than 62% of them (0.15 ac against a typical 0.14 ac) and it is newer than 11% of them (1920 against a typical 1941). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 21 Clark St, East Rockaway, NY?

The 2025 property tax bill for 21 Clark St, East Rockaway, NY was $9,205. The county assessed it at $477.

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Assigned schools

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