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Single Family ResidenceResidential
$857,574$461 / 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 93How 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

270 CORNWELL AVE

MALVERNE, NY 11565
1.5
Baths
1,860 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.
1948
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

$858K
$798K low$917K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$339,574
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$271,659
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.62%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$518,000
BANK OF ENGLAND · recorded Apr 14, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,483 (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.$591 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$223
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$368
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$591
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$591,000

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.Colonial
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 · 144 ft²Shed · 100 ft²Patio · 144 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.

H
Valley Stream Central High SchoolA-
High · Grades 10–12 · 0.9 mi
M
Valley Stream Memorial Junior High SchoolC+
Middle · Grades 7–9 · 0.9 mi

District: Valley Stream Central High School District

Neighborhood · ZIP 11565These 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.53
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.111
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.92

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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.7%
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.8,481
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,778 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$164,360
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$184,712
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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.No

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

270 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 more than 72% of homes in Malverne 11565
  • Costs less per square foot than 71% of homes in Nassau County
  • Bigger than 71% of homes in Malverne 11565
  • Has a smaller lot than 70% of homes in Nassau County
  • Newer than 66% of homes in Malverne 11565

What homes are worth in Malverne 11565

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

This home
$616K$1.1M

This home is worth more than 72% of homes in Malverne 11565.

How it measures up in Malverne 11565

The dot is this home. The mark in the middle is the typical home in Malverne 11565.

Estimated value$857,574
CheaperTypical $796,446Pricier

Pricier than 72% of homes nearby

Price per ft²$461
CheaperTypical $483Pricier

Pricier than 36% of homes nearby

Living area1,860 ft²
SmallerTypical 1,625 ft²Bigger

Bigger than 71% of homes nearby

Lot size0.14 ac
SmallerTypical 0.13 acBigger

Bigger than 52% of homes nearby

Year built1948
OlderTypical 1941Newer

Newer than 66% of homes nearby

How 270 Cornwell Ave ranks against every home in each area.
MeasureThis homeMalverne 11565Nassau County
Estimated valuepricier than$857,57472% of homes54% of homes
Price per ft²pricier than$46136% of homes29% of homes
Living areabigger than1,860 ft²71% of homes57% of homes
Lot sizebigger than0.14 ac52% of homes30% of homes
Year builtnewer than194866% of homes34% of homes

About 270 Cornwell Ave

How much is 270 Cornwell Ave, Malverne, NY worth?

The TopHap Estimate for 270 Cornwell Ave, Malverne, NY is $857,574 as of Jul 14, 2026. The likely range is $797,906 to $917,242. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 270 Cornwell Ave, Malverne, NY last sell?

270 Cornwell Ave, Malverne, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 270 Cornwell Ave, Malverne, NY?

270 Cornwell Ave, Malverne, NY has 1.5 bathrooms, 1,860 square feet of living space and a 0.14-acre lot.

When was 270 Cornwell Ave, Malverne, NY built?

270 Cornwell Ave, Malverne, NY was built in 1948, making it 78 years old. It is a colonial home. The building has 2 stories.

What schools serve 270 Cornwell Ave, Malverne, NY?

270 Cornwell Ave, Malverne, NY is assigned to Valley Stream Central High School (high), rated A-; Valley Stream Memorial Junior High School (middle), rated C+. All sit in Valley Stream Central High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 270 Cornwell Ave, Malverne, NY compare to other homes in Malverne 11565?

Among the 3,128 homes in Malverne 11565, it is worth more than 72% of them ($857,574 against a typical $796,446), its price per square foot is higher than 36% of them ($461 against a typical $483), it is bigger than 71% of them (1,860 ft² against a typical 1,625 ft²), its lot is bigger than 52% of them (0.14 ac against a typical 0.13 ac) and it is newer than 66% of them (1948 against a typical 1941). Measured against all of Nassau County, it is worth more than 54% 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 270 Cornwell Ave, Malverne, NY?

The 2025 property tax bill for 270 Cornwell Ave, Malverne, NY was $10,483. The county assessed it at $591.

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Assigned schools

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