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Single Family ResidenceResidential
$552,887$739 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $310,000 on Jun 23, 2010

21 MARLBORO PL

BELLMORE, NY 11710
1
Baths
748 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.
1922
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$553K
$510K low$595K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$310,000 · Jun 23, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,357 (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.$341 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$171
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$170
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$341
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$341,000

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.60 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
StyleThe architectural style of the home, such as ranch or colonial.Cottage
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)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Block (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
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, Detached
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 · 60 ft²

Transaction History(1)

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
Grand Avenue Middle SchoolA+
Middle · Grades 7–8 · 0.3 mi
E
Reinhard Early Childhood Center
Elementary · Grades PK–2 · 1.1 mi
H
John F Kennedy High SchoolA
High · Grades 9–12 · 1.4 mi

District: Bellmore Union Free School District

Neighborhood · ZIP 11710These 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.55
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.85

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.2.7%
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.36,273
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,326 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$168,445
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$193,829
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

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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

21 Marlboro 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.

  • Worth less than 97% of homes in Bellmore
  • Among the highest price per square foot in Bellmore
  • Among the smallest homes in Nassau County
  • Has a smaller lot than 91% of homes in Bellmore 11710
  • Older than 95% of homes in Bellmore 11710

What homes are worth in Bellmore 11710

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

This home
$536K$1.4M

This home is worth more than 3% of homes in Bellmore 11710.

How it measures up in Bellmore 11710

The dot is this home. The mark in the middle is the typical home in Bellmore 11710.

Estimated value$552,887
CheaperTypical $795,447Pricier

Pricier than 3% of homes nearby

Price per ft²$739
CheaperTypical $475Pricier

Pricier than almost all homes nearby

Living area748 ft²
SmallerTypical 1,720 ft²Bigger

Smaller than almost all homes nearby

Lot size0.11 ac
SmallerTypical 0.15 acBigger

Bigger than 9% of homes nearby

Year built1922
OlderTypical 1956Newer

Newer than 5% of homes nearby

How 21 Marlboro Pl ranks against every home in each area.
MeasureThis homeBellmoreBellmore 11710Nassau County
Estimated valuepricier than$552,8873% of homes3% of homes4% of homes
Price per ft²pricier than$739almost all homesalmost all homes94% of homes
Living areabigger than748 ft²almost no homesalmost no homesalmost no homes
Lot sizebigger than0.11 ac12% of homes9% of homes16% of homes
Year builtnewer than19227% of homes5% of homes6% of homes

About 21 Marlboro Pl

How much is 21 Marlboro Pl, Bellmore, NY worth?

The TopHap Estimate for 21 Marlboro Pl, Bellmore, NY is $552,887 as of Sep 24, 2026. The likely range is $510,356 to $595,418. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Marlboro Pl, Bellmore, NY last sell?

21 Marlboro Pl, Bellmore, NY last sold on Jun 23, 2010 for $310,000, according to the county's recorded deed.

How big is 21 Marlboro Pl, Bellmore, NY?

21 Marlboro Pl, Bellmore, NY has 1 bathrooms, 748 square feet of living space and a 0.12-acre lot.

When was 21 Marlboro Pl, Bellmore, NY built?

21 Marlboro Pl, Bellmore, NY was built in 1922, making it 104 years old. It is a cottage home. The building has 1 story.

What schools serve 21 Marlboro Pl, Bellmore, NY?

21 Marlboro Pl, Bellmore, NY is assigned to Grand Avenue Middle School (middle), rated A+; Reinhard Early Childhood Center (elementary); John F Kennedy High School (high), rated A. All sit in Bellmore Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Marlboro Pl, Bellmore, NY compare to other homes in Bellmore 11710?

Among the 10,994 homes in Bellmore 11710, it is worth more than 3% of them ($552,887 against a typical $795,447), its price per square foot is higher than almost all of them ($739 against a typical $475), it is bigger than almost none of them (748 ft² against a typical 1,720 ft²), its lot is bigger than 9% of them (0.11 ac against a typical 0.15 ac) and it is newer than 5% of them (1922 against a typical 1956). Measured against all of Nassau County, it is worth more than 4% 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 21 Marlboro Pl, Bellmore, NY?

The 2025 property tax bill for 21 Marlboro Pl, Bellmore, NY was $10,357. The county assessed it at $341.

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