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Single Family ResidenceResidential
$871,116$458 / 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 Aug 30, 2026
Last sold for $440,000 on Sep 21, 2005

20 ASTOR PL

VALLEY STREAM, NY 11581
2
Baths
1,900 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
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

$871K
$775K low$968K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$440,000 · Sep 21, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,992 (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.$557 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$202
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$355
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$551
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$557,000

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.84 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
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.12
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, Attached
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.Dead End
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 328 ft²Patio · 328 ft²

Transaction History(5)

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(2)

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

E
Brooklyn Avenue SchoolC+
Elementary · Grades KG–6 · 0.3 mi
M
Valley Stream South High SchoolB+
Middle · Grades 7–12 · 1.1 mi

District: Valley Stream Central High School District

Neighborhood · ZIP 11581These 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.64
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.110
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.100

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.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.3%
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.22,786
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,604 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$132,738
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$159,024
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

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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

20 Astor Pl 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.

  • Costs less per square foot than 71% of homes in Nassau County
  • Has a smaller lot than 84% of homes in Nassau County
  • Older than 77% of homes in Nassau County

What homes are worth in Valley Stream 11581

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

This home
$566K$1.6M

This home is worth more than 60% of homes in Valley Stream 11581.

How it measures up in Valley Stream 11581

The dot is this home. The mark in the middle is the typical home in Valley Stream 11581.

Estimated value$871,116
CheaperTypical $801,659Pricier

Pricier than 60% of homes nearby

Price per ft²$458
CheaperTypical $490Pricier

Pricier than 32% of homes nearby

Living area1,900 ft²
SmallerTypical 1,703 ft²Bigger

Bigger than 61% of homes nearby

Lot size0.11 ac
SmallerTypical 0.14 acBigger

Bigger than 31% of homes nearby

Year built1940
OlderTypical 1951Newer

Newer than 31% of homes nearby

How 20 Astor Pl ranks against every home in each area.
MeasureThis homeValley Stream 11581Nassau County
Estimated valuepricier than$871,11660% of homes57% of homes
Price per ft²pricier than$45832% of homes29% of homes
Living areabigger than1,900 ft²61% of homes60% of homes
Lot sizebigger than0.11 ac31% of homes16% of homes
Year builtnewer than194031% of homes23% of homes

About 20 Astor Pl

How much is 20 Astor Pl, Valley Stream, NY worth?

The TopHap Estimate for 20 Astor Pl, Valley Stream, NY is $871,116 as of Aug 30, 2026. The likely range is $774,674 to $967,558. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Astor Pl, Valley Stream, NY last sell?

20 Astor Pl, Valley Stream, NY last sold on Sep 21, 2005 for $440,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 20 Astor Pl, Valley Stream, NY?

20 Astor Pl, Valley Stream, NY has 2 bathrooms, 1,900 square feet of living space and a 0.12-acre lot.

When was 20 Astor Pl, Valley Stream, NY built?

20 Astor Pl, Valley Stream, NY was built in 1940, making it 86 years old. The building has 2 stories.

What schools serve 20 Astor Pl, Valley Stream, NY?

20 Astor Pl, Valley Stream, NY is assigned to Brooklyn Avenue School (elementary), rated C+; Valley Stream South High School (middle), rated B+. All sit in Valley Stream Central High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Astor Pl, Valley Stream, NY compare to other homes in Valley Stream 11581?

Among the 5,983 homes in Valley Stream 11581, it is worth more than 60% of them ($871,116 against a typical $801,659), its price per square foot is higher than 32% of them ($458 against a typical $490), it is bigger than 61% of them (1,900 ft² against a typical 1,703 ft²), its lot is bigger than 31% of them (0.11 ac against a typical 0.14 ac) and it is newer than 31% of them (1940 against a typical 1951). Measured against all of Nassau County, it is worth more than 57% 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 20 Astor Pl, Valley Stream, NY?

The 2025 property tax bill for 20 Astor Pl, Valley Stream, NY was $5,992. The county assessed it at $557.

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