Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$831,551$642 / 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 90How 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

66 CORNWELL AVE

WILLISTON PARK, NY 11596
1
Baths
1,295 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.
0.14 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.
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.

Valuation

$832K
$750K low$913K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,082 (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.$522 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$331
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$191
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$529
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$522,000

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.Cape Cod
CountyNASSAU
Lot (acres)The size of the land the home sits on, from county records.0.14
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 190 ft²

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

E
Center Street SchoolA+
Elementary · Grades KG–5 · 0.3 mi
M
Herricks High SchoolA+
Middle · Grades 9–12 · 0.8 mi

District: Herricks Union Free School District

Neighborhood · ZIP 11596These 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.50
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 100.93

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.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.6%
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.10,984
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,334 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$162,382
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$199,233
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

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

66 Cornwell Ave 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 75% of homes in Williston Park 11596
  • Costs more per square foot than 83% of homes in Nassau County
  • Smaller than 84% of homes in Williston Park 11596
  • Has a bigger lot than 69% of homes in Williston Park 11596
  • Older than 77% of homes in Nassau County

What homes are worth in Williston Park 11596

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

This home
$688K$2.2M

This home is worth more than 25% of homes in Williston Park 11596.

How it measures up in Williston Park 11596

The dot is this home. The mark in the middle is the typical home in Williston Park 11596.

Estimated value$831,551
CheaperTypical $957,861Pricier

Pricier than 25% of homes nearby

Price per ft²$642
CheaperTypical $602Pricier

Pricier than 69% of homes nearby

Living area1,295 ft²
SmallerTypical 1,671 ft²Bigger

Bigger than 16% of homes nearby

Lot size0.14 ac
SmallerTypical 0.11 acBigger

Bigger than 69% of homes nearby

Year built1940
OlderTypical 1937Newer

Newer than 57% of homes nearby

How 66 Cornwell Ave ranks against every home in each area.
MeasureThis homeWilliston Park 11596Nassau County
Estimated valuepricier than$831,55125% of homes50% of homes
Price per ft²pricier than$64269% of homes83% of homes
Living areabigger than1,295 ft²16% of homes19% of homes
Lot sizebigger than0.14 ac69% of homes46% of homes
Year builtnewer than194057% of homes23% of homes

About 66 Cornwell Ave

How much is 66 Cornwell Ave, Williston Park, NY worth?

The TopHap Estimate for 66 Cornwell Ave, Williston Park, NY is $831,551 as of Oct 21, 2026. The likely range is $749,863 to $913,239. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 66 Cornwell Ave, Williston Park, NY last sell?

66 Cornwell Ave, Williston Park, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 66 Cornwell Ave, Williston Park, NY?

66 Cornwell Ave, Williston Park, NY has 1 bathrooms, 1,295 square feet of living space and a 0.14-acre lot.

When was 66 Cornwell Ave, Williston Park, NY built?

66 Cornwell Ave, Williston Park, NY was built in 1940, making it 86 years old. It is a cape cod home. The building has 1 story.

What schools serve 66 Cornwell Ave, Williston Park, NY?

66 Cornwell Ave, Williston Park, NY is assigned to Center Street School (elementary), rated A+; Herricks High School (middle), rated A+. All sit in Herricks Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 66 Cornwell Ave, Williston Park, NY compare to other homes in Williston Park 11596?

Among the 3,290 homes in Williston Park 11596, it is worth more than 25% of them ($831,551 against a typical $957,861), its price per square foot is higher than 69% of them ($642 against a typical $602), it is bigger than 16% of them (1,295 ft² against a typical 1,671 ft²), its lot is bigger than 69% of them (0.14 ac against a typical 0.11 ac) and it is newer than 57% of them (1940 against a typical 1937). Measured against all of Nassau County, it is worth more than 50% 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 66 Cornwell Ave, Williston Park, NY?

The 2025 property tax bill for 66 Cornwell Ave, Williston Park, NY was $8,082. The county assessed it at $522.

More homes on Cornwell Ave

Closest homes

More homes in Williston Park 11596

Assigned schools

Explore the area

See this home in context

Open 66 Cornwell Ave 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