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Single Family ResidenceResidential
$687,341$112 / 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 60How 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 $195,000 on Sep 21, 2020

831 COUNTY ROUTE 21

WINDHAM, NY 12496
5
Beds
5
Baths
6,124 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.
20.15 ac
Lot SizeThe size of the land the home sits on, from county records.
2022
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
10
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$687K
$410K low$965K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$195,000 · Sep 21, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$26,639 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$1,600,000 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$102,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,497,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,928,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$2,622,951

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.52
68
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
10
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
50
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
94
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
39
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.37 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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.Contemporary
CountyGreene
Lot (acres)The size of the land the home sits on, from county records.20.15
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, 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 · 150 ft²

Transaction History(4)

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
Windham Ashland Central SchoolB+
Elementary · Grades PK–12 · 4.0 mi

District: Windham-Ashland-Jewett Central School District

Neighborhood · ZIP 12496These 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.163
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.58

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.36%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.3%
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.1,686
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.39 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$75,311
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$95,729
Average tempThe average temperature here across a full year.43°F
Annual precipHow much rain and melted snow falls here in a typical year.43 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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

831 County Route 21 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 89% of homes in Greene County
  • Among the lowest price per square foot in Windham 12496
  • Among the largest homes in Greene County
  • Has a bigger lot than 96% of homes in Windham 12496
  • Among the newest homes in Greene County

What homes are worth in Windham 12496

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

This home
$174K$2.3M

This home is worth more than 65% of homes in Windham 12496.

How it measures up in Windham 12496

The dot is this home. The mark in the middle is the typical home in Windham 12496.

Estimated value$687,341
CheaperTypical $539,413Pricier

Pricier than 65% of homes nearby

Price per ft²$112
CheaperTypical $339Pricier

Cheaper than almost all homes nearby

Living area6,124 ft²
SmallerTypical 1,674 ft²Bigger

Bigger than almost all homes nearby

Lot size20.15 ac
SmallerTypical 1 acBigger

Bigger than 96% of homes nearby

Year built2022
OlderTypical 1986Newer

Newer than 98% of homes nearby

How 831 County Route 21 ranks against every home in each area.
MeasureThis homeWindham 12496Greene County
Estimated valuepricier than$687,34165% of homes89% of homes
Price per ft²pricier than$112almost no homes3% of homes
Living areabigger than6,124 ft²almost all homesalmost all homes
Lot sizebigger than20.15 ac96% of homes93% of homes
Year builtnewer than202298% of homesalmost all homes

About 831 County Route 21

How much is 831 County Route 21, Windham, NY worth?

The TopHap Estimate for 831 County Route 21, Windham, NY is $687,341 as of Sep 24, 2026. The likely range is $409,609 to $965,073. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 831 County Route 21, Windham, NY last sell?

831 County Route 21, Windham, NY last sold on Sep 21, 2020 for $195,000, according to the county's recorded deed.

How big is 831 County Route 21, Windham, NY?

831 County Route 21, Windham, NY has 5 bedrooms, 5 bathrooms, 6,124 square feet of living space and a 20.15-acre lot.

When was 831 County Route 21, Windham, NY built?

831 County Route 21, Windham, NY was built in 2022, making it 4 years old. It is a contemporary home. The building has 2 stories.

What schools serve 831 County Route 21, Windham, NY?

831 County Route 21, Windham, NY is assigned to Windham Ashland Central School (elementary), rated B+. All sit in Windham-Ashland-Jewett Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 831 County Route 21, Windham, NY compare to other homes in Windham 12496?

Among the 2,269 homes in Windham 12496, it is worth more than 65% of them ($687,341 against a typical $539,413), its price per square foot is higher than almost none of them ($112 against a typical $339), it is bigger than almost all of them (6,124 ft² against a typical 1,674 ft²), its lot is bigger than 96% of them (20.15 ac against a typical 1 ac) and it is newer than 98% of them (2022 against a typical 1986). Measured against all of Greene County, it is worth more than 89% 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 831 County Route 21, Windham, NY?

The 2024 property tax bill for 831 County Route 21, Windham, NY was $26,639. The county assessed it at $1,600,000.

More homes on County Route 21

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More homes in Windham 12496

Assigned schools

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