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Duplex (2 Units, Any Combination)Residential
Last sold for $321,000 on Nov 8, 2013

50 GRAND AVE

ROCKVILLE CENTRE, NY 11570
2
Baths
1,690 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1898
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$321,000 · Nov 8, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,357 (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.$517 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$235
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$282
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$527
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$517,000

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.0.17
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
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 35 ft²

Transaction History(2)

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

Foreclosure Filings(1)

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

M
Southside Middle SchoolB+
Middle · Grades 6–8 · 0.1 mi
E
Floyd B. Watson Elementary SchoolA-
Elementary · Grades KG–5 · 0.5 mi
H
Southside High SchoolA
High · Grades 9–12 · 1.3 mi

District: Rockville Centre Union Free School District

Neighborhood · ZIP 11570These 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.82
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.112
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.91

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.6%
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.28,370
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,589 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$144,451
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$184,571
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

50 Grand Ave 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.

  • Smaller than 74% of homes in Rockville Centre 11570
  • Among the oldest homes in Rockville Centre 11570

How it measures up in Rockville Centre 11570

The dot is this home. The mark in the middle is the typical home in Rockville Centre 11570.

Living area1,690 ft²
SmallerTypical 2,062 ft²Bigger

Bigger than 26% of homes nearby

Lot size0.17 ac
SmallerTypical 0.16 acBigger

Bigger than 56% of homes nearby

Year built1898
OlderTypical 1935Newer

Older than almost all homes nearby

How 50 Grand Ave ranks against every home in each area.
MeasureThis homeRockville Centre 11570Nassau County
Living areabigger than1,690 ft²26% of homes47% of homes
Lot sizebigger than0.17 ac56% of homes64% of homes
Year builtnewer than1898almost no homesalmost no homes

About 50 Grand Ave

When did 50 Grand Ave, Rockville Centre, NY last sell?

50 Grand Ave, Rockville Centre, NY last sold on Nov 8, 2013 for $321,000, according to the county's recorded deed.

How big is 50 Grand Ave, Rockville Centre, NY?

50 Grand Ave, Rockville Centre, NY has 2 bathrooms, 1,690 square feet of living space and a 0.17-acre lot.

When was 50 Grand Ave, Rockville Centre, NY built?

50 Grand Ave, Rockville Centre, NY was built in 1898, making it 128 years old. The building has 2 stories.

What schools serve 50 Grand Ave, Rockville Centre, NY?

50 Grand Ave, Rockville Centre, NY is assigned to Southside Middle School (middle), rated B+; Floyd B. Watson Elementary School (elementary), rated A-; Southside High School (high), rated A. All sit in Rockville Centre Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 50 Grand Ave, Rockville Centre, NY compare to other homes in Rockville Centre 11570?

Among the 6,982 homes in Rockville Centre 11570, it is bigger than 26% of them (1,690 ft² against a typical 2,062 ft²), its lot is bigger than 56% of them (0.17 ac against a typical 0.16 ac) and it is newer than almost none of them (1898 against a typical 1935). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 50 Grand Ave, Rockville Centre, NY?

The 2025 property tax bill for 50 Grand Ave, Rockville Centre, NY was $12,357. The county assessed it at $517.

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Assigned schools

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