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Duplex (2 Units, Any Combination)Residential
Last sold for $545,000 on Sep 8, 2023

549 CORNWELL AVE

MALVERNE, NY 11565
2.5
Baths
2,684 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.
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.
1838
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$545,000 · Sep 8, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,662 (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.$644 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$272
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$372
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$690
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$644,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
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.0.31
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Block (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.Porch · 368 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.

M
Valley Stream North High SchoolB+
Middle · Grades 7–12 · 0.7 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%

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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

549 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.

  • Bigger than 96% of homes in Malverne 11565
  • Among the largest lots in Malverne 11565
  • Among the oldest 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.

Living area2,684 ft²
SmallerTypical 1,626 ft²Bigger

Bigger than 96% of homes nearby

Lot size0.31 ac
SmallerTypical 0.13 acBigger

Bigger than almost all homes nearby

Year built1838
OlderTypical 1941Newer

Older than almost all homes nearby

How 549 Cornwell Ave ranks against every home in each area.
MeasureThis homeMalverne 11565Nassau County
Living areabigger than2,684 ft²96% of homes86% of homes
Lot sizebigger than0.31 acalmost all homes91% of homes
Year builtnewer than1838almost no homesalmost no homes

About 549 Cornwell Ave

When did 549 Cornwell Ave, Malverne, NY last sell?

549 Cornwell Ave, Malverne, NY last sold on Sep 8, 2023 for $545,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 549 Cornwell Ave, Malverne, NY?

549 Cornwell Ave, Malverne, NY has 2.5 bathrooms, 2,684 square feet of living space and a 0.31-acre lot.

When was 549 Cornwell Ave, Malverne, NY built?

549 Cornwell Ave, Malverne, NY was built in 1838, making it 188 years old. It is a colonial home. The building has 2 stories.

What schools serve 549 Cornwell Ave, Malverne, NY?

549 Cornwell Ave, Malverne, NY is assigned to Valley Stream North 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 549 Cornwell Ave, Malverne, NY compare to other homes in Malverne 11565?

Among the 3,128 homes in Malverne 11565, it is bigger than 96% of them (2,684 ft² against a typical 1,626 ft²), its lot is bigger than almost all of them (0.31 ac against a typical 0.13 ac) and it is newer than almost none of them (1838 against a typical 1941). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 549 Cornwell Ave, Malverne, NY?

The 2025 property tax bill for 549 Cornwell Ave, Malverne, NY was $12,662. The county assessed it at $644.

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