Skip to content
Skip to content
TopHapOpen in map
Apartments (Generic)Residential
Last sold for $10,118,478 on Feb 9, 2018

91 GRAND AVE

ROCKVILLE CENTRE, NY 11570
6
Beds
5
Baths
92,524 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.
1.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$10,118,478 · Feb 9, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$206,572 (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.$38,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,610
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$31,490
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$40,073
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$3,810,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Apartments (Generic)
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.1.16
ConstructionThe main material the home's frame and walls are built from.Steel Frame
HeatingThe type of heating system in the home.Yes
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, Open
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Apt/Condo Complex

Transaction History(9)

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
Southside Middle SchoolA
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 · 1.2 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%

Owner Tools

Do you own this home?
Claim this home

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

91 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.

  • Among the largest homes in Rockville Centre 11570
  • Has a bigger lot than 98% of homes in Rockville Centre 11570
  • Newer than 87% of 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 area92,524 ft²
SmallerTypical 2,067 ft²Bigger

Bigger than almost all homes nearby

Lot size1.16 ac
SmallerTypical 0.16 acBigger

Bigger than 98% of homes nearby

Year built1959
OlderTypical 1935Newer

Newer than 87% of homes nearby

How 91 Grand Ave ranks against every home in each area.
MeasureThis homeRockville Centre 11570Nassau County
Living areabigger than92,524 ft²almost all homesalmost all homes
Lot sizebigger than1.16 ac98% of homes97% of homes
Year builtnewer than195987% of homes75% of homes

About 91 Grand Ave

When did 91 Grand Ave, Rockville Centre, NY last sell?

91 Grand Ave, Rockville Centre, NY last sold on Feb 9, 2018 for $10,118,478, according to the county's recorded deed.

How big is 91 Grand Ave, Rockville Centre, NY?

91 Grand Ave, Rockville Centre, NY has 6 bedrooms, 5 bathrooms, 92,524 square feet of living space and a 1.16-acre lot.

When was 91 Grand Ave, Rockville Centre, NY built?

91 Grand Ave, Rockville Centre, NY was built in 1959, making it 67 years old. The building has 1 story.

What schools serve 91 Grand Ave, Rockville Centre, NY?

91 Grand Ave, Rockville Centre, NY is assigned to Southside Middle School (middle), rated A; 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 91 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 almost all of them (92,524 ft² against a typical 2,067 ft²), its lot is bigger than 98% of them (1.16 ac against a typical 0.16 ac) and it is newer than 87% of them (1959 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 91 Grand Ave, Rockville Centre, NY?

The 2025 property tax bill for 91 Grand Ave, Rockville Centre, NY was $206,572. The county assessed it at $38,100.

More homes on Grand Ave

Closest homes

More homes in Rockville Centre 11570

Assigned schools

Explore the area

See this home in context

Open 91 Grand Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map