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Single Family ResidenceResidential
$825,915$615 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $505,000 on Nov 1, 2016

81 RIVERDALE RD

VALLEY STREAM, NY 11581
3.5
Baths
1,344 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1952
Year BuiltThe year the home was originally built, according to county records.
1
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

$826K
$802K low$850K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$505,000 · Nov 1, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,592 (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.$553 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$254
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$299
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$578
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$553,000

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.80 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.90%
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.1 percent flood zone

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.Ranch
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.21
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
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 300 ft²Patio · 300 ft²

Transaction History(2)

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
Forest Road SchoolB
Elementary · Grades KG–6 · 0.3 mi

District: Valley Stream Union Free School District 30

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

81 Riverdale Rd 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 more per square foot than 96% of homes in South Valley Stream
  • Smaller than 86% of homes in South Valley Stream
  • Has a bigger lot than 94% of homes in Valley Stream 11581

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
$574K$1.6M

This home is worth more than 53% 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$825,915
CheaperTypical $807,469Pricier

Pricier than 53% of homes nearby

Price per ft²$615
CheaperTypical $493Pricier

Pricier than 95% of homes nearby

Living area1,344 ft²
SmallerTypical 1,691 ft²Bigger

Bigger than 23% of homes nearby

Lot size0.21 ac
SmallerTypical 0.14 acBigger

Bigger than 94% of homes nearby

Year built1952
OlderTypical 1951Newer

Newer than 57% of homes nearby

How 81 Riverdale Rd ranks against every home in each area.
MeasureThis homeSouth Valley StreamValley Stream 11581Nassau County
Estimated valuepricier than$825,91538% of homes53% of homes49% of homes
Price per ft²pricier than$61596% of homes95% of homes78% of homes
Living areabigger than1,344 ft²14% of homes23% of homes23% of homes
Lot sizebigger than0.21 ac88% of homes94% of homes78% of homes
Year builtnewer than195244% of homes57% of homes52% of homes

About 81 Riverdale Rd

How much is 81 Riverdale Rd, Valley Stream, NY worth?

The TopHap Estimate for 81 Riverdale Rd, Valley Stream, NY is $825,915 as of Jul 14, 2026. The likely range is $802,150 to $849,680. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 81 Riverdale Rd, Valley Stream, NY last sell?

81 Riverdale Rd, Valley Stream, NY last sold on Nov 1, 2016 for $505,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 81 Riverdale Rd, Valley Stream, NY?

81 Riverdale Rd, Valley Stream, NY has 3.5 bathrooms, 1,344 square feet of living space and a 0.21-acre lot.

When was 81 Riverdale Rd, Valley Stream, NY built?

81 Riverdale Rd, Valley Stream, NY was built in 1952, making it 74 years old. It is a ranch home. The building has 1 story.

What schools serve 81 Riverdale Rd, Valley Stream, NY?

81 Riverdale Rd, Valley Stream, NY is assigned to Forest Road School (elementary), rated B. All sit in Valley Stream Union Free School District 30. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 81 Riverdale Rd, 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 53% of them ($825,915 against a typical $807,469), its price per square foot is higher than 95% of them ($615 against a typical $493), it is bigger than 23% of them (1,344 ft² against a typical 1,691 ft²), its lot is bigger than 94% of them (0.21 ac against a typical 0.14 ac) and it is newer than 57% of them (1952 against a typical 1951). Measured against all of Nassau County, it is worth more than 49% 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 81 Riverdale Rd, Valley Stream, NY?

The 2025 property tax bill for 81 Riverdale Rd, Valley Stream, NY was $13,592. The county assessed it at $553.

More homes on Riverdale Rd

Closest homes

More homes in Valley Stream 11581

Assigned schools

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