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CondominiumResidential
$536,413$641 / 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 80How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $321,000 on Sep 25, 2008

138 DEER RUN

CHAPPAQUA, NY 10514
1
Beds
1
Baths
837 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.
436 ft²
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$536K
$430K low$643K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$321,000 · Sep 25, 2008

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,276 (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.$36,091 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$25,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$11,091
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$36,091
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$258,716

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.41
25
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.
66
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
93
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.6 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.0.2 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyWESTCHESTER
Lot (acres)The size of the land the home sits on, from county records.0.01
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

Neighborhood · ZIP 10514These 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.14
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 100.105

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.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.9%
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.12,940
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.968 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$237,936
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$330,950
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.51 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

138 Deer Run 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.

  • Among the least valuable homes in Chappaqua 10514
  • Costs more per square foot than 77% of homes in Chappaqua 10514
  • Among the smallest homes in Chappaqua 10514
  • Has a smaller lot than 95% of homes in Westchester County
  • Newer than 85% of homes in Westchester County

What homes are worth in Chappaqua 10514

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

This home
$553K$3.6M

This home is worth less than almost all homes in Chappaqua 10514.

How it measures up in Chappaqua 10514

The dot is this home. The mark in the middle is the typical home in Chappaqua 10514.

Estimated value$536,413
CheaperTypical $1,532,597Pricier

Cheaper than almost all homes nearby

Price per ft²$641
CheaperTypical $565Pricier

Pricier than 77% of homes nearby

Living area837 ft²
SmallerTypical 2,847 ft²Bigger

Smaller than almost all homes nearby

Lot size436 ft²
SmallerTypical 1.02 acBigger

Bigger than 8% of homes nearby

Year built1987
OlderTypical 1963Newer

Newer than 81% of homes nearby

How 138 Deer Run ranks against every home in each area.
MeasureThis homeChappaqua 10514Westchester County
Estimated valuepricier than$536,413almost no homes14% of homes
Price per ft²pricier than$64177% of homes76% of homes
Living areabigger than837 ft²almost no homes2% of homes
Lot sizebigger than436 ft²8% of homes5% of homes
Year builtnewer than198781% of homes85% of homes

About 138 Deer Run

How much is 138 Deer Run, Chappaqua, NY worth?

The TopHap Estimate for 138 Deer Run, Chappaqua, NY is $536,413 as of Aug 30, 2026. The likely range is $429,544 to $643,282. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 138 Deer Run, Chappaqua, NY last sell?

138 Deer Run, Chappaqua, NY last sold on Sep 25, 2008 for $321,000, according to the county's recorded deed.

How big is 138 Deer Run, Chappaqua, NY?

138 Deer Run, Chappaqua, NY has 1 bedrooms, 1 bathrooms, 837 square feet of living space and a 0.01-acre lot.

When was 138 Deer Run, Chappaqua, NY built?

138 Deer Run, Chappaqua, NY was built in 1987, making it 39 years old. The building has 1 story.

How does 138 Deer Run, Chappaqua, NY compare to other homes in Chappaqua 10514?

Among the 4,007 homes in Chappaqua 10514, it is worth more than almost none of them ($536,413 against a typical $1,532,597), its price per square foot is higher than 77% of them ($641 against a typical $565), it is bigger than almost none of them (837 ft² against a typical 2,847 ft²), its lot is bigger than 8% of them (436 ft² against a typical 1.02 ac) and it is newer than 81% of them (1987 against a typical 1963). Measured against all of Westchester County, it is worth more than 14% 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 138 Deer Run, Chappaqua, NY?

The 2025 property tax bill for 138 Deer Run, Chappaqua, NY was $7,276. The county assessed it at $36,091.

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