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Single Family ResidenceResidential
$617,237$566 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $428,000 on Nov 17, 2020

100 S WILLIAM ST

PEARL RIVER, NY 10965
2
Beds
2
Baths
1,091 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.
0.27 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$617K
$583K low$651K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$428,000 · Nov 17, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,159 (2023)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$152,900 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$43,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$109,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$447,862

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyROCKLAND
Lot (acres)The size of the land the home sits on, from county records.0.27
HeatingThe type of heating system in the home.Hot Water
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 · 234 ft²

Transaction History(3)

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
Franklin Avenue SchoolB+
Elementary · Grades KG–4 · 0.1 mi
H
Pearl River High SchoolA
High · Grades 8–12 · 0.7 mi
M
Pearl River Middle SchoolA-
Middle · Grades 5–7 · 1.0 mi

District: Pearl River Union Free School District

Neighborhood · ZIP 10965These 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.71
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 100.112

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.15,807
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,914 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$139,939
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$161,425
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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

100 S William 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.

  • Worth less than 79% of homes in Pearl River 10965
  • Costs more per square foot than 95% of homes in Pearl River 10965
  • Smaller than 90% of homes in Rockland County
  • Older than 89% of homes in Rockland County

What homes are worth in Pearl River 10965

Each bar is how many homes fall in that price range. The marker is this home.

This home
$341K$1.2M

This home is worth more than 21% of homes in Pearl River 10965.

How it measures up in Pearl River 10965

The dot is this home. The mark in the middle is the typical home in Pearl River 10965.

Estimated value$617,237
CheaperTypical $726,606Pricier

Pricier than 21% of homes nearby

Price per ft²$566
CheaperTypical $416Pricier

Pricier than 95% of homes nearby

Living area1,091 ft²
SmallerTypical 1,788 ft²Bigger

Bigger than 11% of homes nearby

Lot size0.27 ac
SmallerTypical 0.32 acBigger

Bigger than 40% of homes nearby

Year built1930
OlderTypical 1958Newer

Newer than 15% of homes nearby

How 100 S William St ranks against every home in each area.
MeasureThis homePearl River 10965Rockland County
Estimated valuepricier than$617,23721% of homes29% of homes
Price per ft²pricier than$56695% of homes95% of homes
Living areabigger than1,091 ft²11% of homes10% of homes
Lot sizebigger than0.27 ac40% of homes41% of homes
Year builtnewer than193015% of homes11% of homes

About 100 S William St

How much is 100 S William St, Pearl River, NY worth?

The TopHap Estimate for 100 S William St, Pearl River, NY is $617,237 as of Sep 24, 2026. The likely range is $583,497 to $650,977. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 100 S William St, Pearl River, NY last sell?

100 S William St, Pearl River, NY last sold on Nov 17, 2020 for $428,000, according to the county's recorded deed.

How big is 100 S William St, Pearl River, NY?

100 S William St, Pearl River, NY has 2 bedrooms, 2 bathrooms, 1,091 square feet of living space and a 0.27-acre lot.

When was 100 S William St, Pearl River, NY built?

100 S William St, Pearl River, NY was built in 1930, making it 96 years old. The building has 2 stories.

What schools serve 100 S William St, Pearl River, NY?

100 S William St, Pearl River, NY is assigned to Franklin Avenue School (elementary), rated B+; Pearl River High School (high), rated A; Pearl River Middle School (middle), rated A-. All sit in Pearl River Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 100 S William St, Pearl River, NY compare to other homes in Pearl River 10965?

Among the 4,733 homes in Pearl River 10965, it is worth more than 21% of them ($617,237 against a typical $726,606), its price per square foot is higher than 95% of them ($566 against a typical $416), it is bigger than 11% of them (1,091 ft² against a typical 1,788 ft²), its lot is bigger than 40% of them (0.27 ac against a typical 0.32 ac) and it is newer than 15% of them (1930 against a typical 1958). Measured against all of Rockland County, it is worth more than 29% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 100 S William St, Pearl River, NY?

The 2023 property tax bill for 100 S William St, Pearl River, NY was $12,159. The county assessed it at $152,900.

More homes on S William St

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Assigned schools

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