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Single Family ResidenceResidential
$447,869$498 / 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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $166,000 on Apr 1, 2010

19 WILLIAM ST

ROOSEVELT, NY 11575
1
Baths
900 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.
0.16 ac
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.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$448K
$397K low$499K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$166,000 · Apr 1, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,072 (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.$291 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$131
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$160
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$291
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$291,000

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.18 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Cottage
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.16
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 128 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
Washington Rose Elementary SchoolD+
Elementary · Grades KG–6 · 0.2 mi
H
Roosevelt High SchoolD
High · Grades 9–12 · 0.6 mi
M
Roosevelt Middle SchoolD+
Middle · Grades 7–8 · 0.7 mi

District: Roosevelt Union Free School District

Neighborhood · ZIP 11575These 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.83
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 100.90

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.18,145
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.10,322 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$124,855
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$152,435
Average tempThe average temperature here across a full year.53°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

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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

19 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.

  • Among the least valuable homes in Nassau County
  • Costs more per square foot than 88% of homes in Roosevelt 11575
  • Smaller than 98% of homes in Nassau County
  • Has a bigger lot than 65% of homes in Roosevelt 11575
  • Older than 83% of homes in Nassau County

What homes are worth in Roosevelt 11575

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

This home
$361K$796K

This home is worth more than 7% of homes in Roosevelt 11575.

How it measures up in Roosevelt 11575

The dot is this home. The mark in the middle is the typical home in Roosevelt 11575.

Estimated value$447,869
CheaperTypical $582,173Pricier

Pricier than 7% of homes nearby

Price per ft²$498
CheaperTypical $413Pricier

Pricier than 88% of homes nearby

Living area900 ft²
SmallerTypical 1,427 ft²Bigger

Bigger than 4% of homes nearby

Lot size0.16 ac
SmallerTypical 0.14 acBigger

Bigger than 65% of homes nearby

Year built1931
OlderTypical 1952Newer

Newer than 29% of homes nearby

How 19 William St ranks against every home in each area.
MeasureThis homeRoosevelt 11575Nassau County
Estimated valuepricier than$447,8697% of homesalmost no homes
Price per ft²pricier than$49888% of homes43% of homes
Living areabigger than900 ft²4% of homes2% of homes
Lot sizebigger than0.16 ac65% of homes57% of homes
Year builtnewer than193129% of homes17% of homes

About 19 William St

How much is 19 William St, Roosevelt, NY worth?

The TopHap Estimate for 19 William St, Roosevelt, NY is $447,869 as of Oct 21, 2026. The likely range is $397,146 to $498,592. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 19 William St, Roosevelt, NY last sell?

19 William St, Roosevelt, NY last sold on Apr 1, 2010 for $166,000, according to the county's recorded deed.

How big is 19 William St, Roosevelt, NY?

19 William St, Roosevelt, NY has 1 bathrooms, 900 square feet of living space and a 0.16-acre lot.

When was 19 William St, Roosevelt, NY built?

19 William St, Roosevelt, NY was built in 1931, making it 95 years old. It is a cottage home. The building has 1 story.

What schools serve 19 William St, Roosevelt, NY?

19 William St, Roosevelt, NY is assigned to Washington Rose Elementary School (elementary), rated D+; Roosevelt High School (high), rated D; Roosevelt Middle School (middle), rated D+. All sit in Roosevelt Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 19 William St, Roosevelt, NY compare to other homes in Roosevelt 11575?

Among the 3,778 homes in Roosevelt 11575, it is worth more than 7% of them ($447,869 against a typical $582,173), its price per square foot is higher than 88% of them ($498 against a typical $413), it is bigger than 4% of them (900 ft² against a typical 1,427 ft²), its lot is bigger than 65% of them (0.16 ac against a typical 0.14 ac) and it is newer than 29% of them (1931 against a typical 1952). Measured against all of Nassau County, it is worth more than almost no 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 19 William St, Roosevelt, NY?

The 2025 property tax bill for 19 William St, Roosevelt, NY was $7,072. The county assessed it at $291.

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Assigned schools

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