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Single Family ResidenceResidential
$696,888$521 / 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 94How 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
Last sold for $349,900 on Jun 14, 2016

20 CALAM AVE

OSSINING, NY 10562
3
Beds
1.5
Baths
1,338 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.
0.13 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.
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.

Valuation

$697K
$653K low$741K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$349,900 · Jun 14, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,741 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$610,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$252,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$357,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$535,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$610,100

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.37
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
5
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
68
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
96
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
16
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Traditional/Old
CountyWESTCHESTER
Lot (acres)The size of the land the home sits on, from county records.0.13
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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 · 319 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
Brookside School
Elementary · Grades 1–2 · 0.8 mi
M
Anne M. Dorner Middle SchoolC
Middle · Grades 6–8 · 0.8 mi
H
Ossining High SchoolC-
High · Grades 9–12 · 0.9 mi

District: Ossining Union Free School District

Neighborhood · ZIP 10562These 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.72
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.109

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.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.1%
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.31,317
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,164 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,343
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$154,080
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.55%

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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

20 Calam 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 69% of homes in Westchester County
  • Costs more per square foot than 90% of homes in Ossining 10562
  • Smaller than 84% of homes in Westchester County
  • Has a smaller lot than 68% of homes in Westchester County
  • Older than 65% of homes in Westchester County

What homes are worth in Ossining 10562

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

This home
$369K$1.5M

This home is worth more than 59% of homes in Ossining 10562.

How it measures up in Ossining 10562

The dot is this home. The mark in the middle is the typical home in Ossining 10562.

Estimated value$696,888
CheaperTypical $652,042Pricier

Pricier than 59% of homes nearby

Price per ft²$521
CheaperTypical $409Pricier

Pricier than 90% of homes nearby

Living area1,338 ft²
SmallerTypical 1,664 ft²Bigger

Bigger than 24% of homes nearby

Lot size0.13 ac
SmallerTypical 0.17 acBigger

Bigger than 41% of homes nearby

Year built1940
OlderTypical 1955Newer

Newer than 38% of homes nearby

How 20 Calam Ave ranks against every home in each area.
MeasureThis homeOssining 10562Westchester County
Estimated valuepricier than$696,88859% of homes31% of homes
Price per ft²pricier than$52190% of homes53% of homes
Living areabigger than1,338 ft²24% of homes16% of homes
Lot sizebigger than0.13 ac41% of homes32% of homes
Year builtnewer than194038% of homes35% of homes

About 20 Calam Ave

How much is 20 Calam Ave, Ossining, NY worth?

The TopHap Estimate for 20 Calam Ave, Ossining, NY is $696,888 as of Oct 21, 2026. The likely range is $652,860 to $740,916. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Calam Ave, Ossining, NY last sell?

20 Calam Ave, Ossining, NY last sold on Jun 14, 2016 for $349,900, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 20 Calam Ave, Ossining, NY?

20 Calam Ave, Ossining, NY has 3 bedrooms, 1.5 bathrooms, 1,338 square feet of living space and a 0.13-acre lot.

When was 20 Calam Ave, Ossining, NY built?

20 Calam Ave, Ossining, NY was built in 1940, making it 86 years old. It is a traditional/old home. The building has 2 stories.

What schools serve 20 Calam Ave, Ossining, NY?

20 Calam Ave, Ossining, NY is assigned to Brookside School (elementary); Anne M. Dorner Middle School (middle), rated C; Ossining High School (high), rated C-. All sit in Ossining Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Calam Ave, Ossining, NY compare to other homes in Ossining 10562?

Among the 7,619 homes in Ossining 10562, it is worth more than 59% of them ($696,888 against a typical $652,042), its price per square foot is higher than 90% of them ($521 against a typical $409), it is bigger than 24% of them (1,338 ft² against a typical 1,664 ft²), its lot is bigger than 41% of them (0.13 ac against a typical 0.17 ac) and it is newer than 38% of them (1940 against a typical 1955). Measured against all of Westchester County, it is worth more than 31% 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 20 Calam Ave, Ossining, NY?

The 2026 property tax bill for 20 Calam Ave, Ossining, NY was $17,741. The county assessed it at $610,100.

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