Skip to content
Skip to content
TopHapOpen in map
Duplex (2 Units, Any Combination)Residential

20 CHESTNUT ST

ROCKVILLE CENTRE, NY 11570
3
Baths
1,340 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.
4,000 ft²
Lot SizeThe size of the land the home sits on, from county records.
1931
Year BuiltThe year the home was originally built, according to county records.
1
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.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,677 (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.$582 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$205
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$377
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$582
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$582,000

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.29
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
60
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
82
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
1
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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)
StyleThe architectural style of the home, such as ranch or colonial.Cape Cod
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.09
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
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 208 ft²

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
North Oceanside Road Elementary School #5B+
Elementary · Grades 1–6 · 0.2 mi
H
Oceanside High School #7A-
High · Grades 9–12 · 1.2 mi
M
Oceanside Middle School #9MA
Middle · Grades 7–8 · 2.1 mi

District: Oceanside 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

20 Chestnut 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.

  • Smaller than 92% of homes in Rockville Centre 11570
  • Among the smallest lots in Rockville Centre 11570
  • Older than 82% of homes in Nassau County

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 area1,340 ft²
SmallerTypical 2,065 ft²Bigger

Bigger than 8% of homes nearby

Lot size4,000 ft²
SmallerTypical 0.16 acBigger

Smaller than almost all homes nearby

Year built1931
OlderTypical 1935Newer

Newer than 45% of homes nearby

How 20 Chestnut St ranks against every home in each area.
MeasureThis homeRockville Centre 11570Nassau County
Living areabigger than1,340 ft²8% of homes23% of homes
Lot sizebigger than4,000 ft²almost no homes4% of homes
Year builtnewer than193145% of homes18% of homes

About 20 Chestnut St

When did 20 Chestnut St, Rockville Centre, NY last sell?

20 Chestnut St, Rockville Centre, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 20 Chestnut St, Rockville Centre, NY?

20 Chestnut St, Rockville Centre, NY has 3 bathrooms, 1,340 square feet of living space and a 0.09-acre lot.

When was 20 Chestnut St, Rockville Centre, NY built?

20 Chestnut St, Rockville Centre, NY was built in 1931, making it 95 years old. It is a cape cod home. The building has 1 story.

What schools serve 20 Chestnut St, Rockville Centre, NY?

20 Chestnut St, Rockville Centre, NY is assigned to North Oceanside Road Elementary School #5 (elementary), rated B+; Oceanside High School #7 (high), rated A-; Oceanside Middle School #9M (middle), rated A. All sit in Oceanside Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Chestnut St, Rockville Centre, NY compare to other homes in Rockville Centre 11570?

Among the 6,982 homes in Rockville Centre 11570, it is bigger than 8% of them (1,340 ft² against a typical 2,065 ft²), its lot is bigger than almost none of them (4,000 ft² against a typical 0.16 ac) and it is newer than 45% of them (1931 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 20 Chestnut St, Rockville Centre, NY?

The 2025 property tax bill for 20 Chestnut St, Rockville Centre, NY was $9,677. The county assessed it at $582.

More homes on Chestnut St

Closest homes

More homes in Rockville Centre 11570

Assigned schools

Explore the area

See this home in context

Open 20 Chestnut St 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