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Single Family ResidenceResidential
$4,813,790$865 / 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 Aug 30, 2026
Last sold for $2,660,600 on Nov 16, 2007

81 PROSPECT AVE

LARCHMONT, NY 10538
5
Beds
4 / 2
Baths
5,566 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1897
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$4.8M
$4.4M low$5.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,660,600 · Nov 16, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$77,631 (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.$4,782,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$455,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$4,327,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$4,643,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$4,782,000

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
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
6
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
67
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
82
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
49
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.0.20
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, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

E
Chatsworth Avenue Elementary SchoolA-
Elementary · Grades KG–5 · 0.4 mi
M
Hommocks Middle SchoolB
Middle · Grades 6–8 · 0.7 mi
H
Mamaroneck High SchoolA+
High · Grades 9–12 · 1.2 mi

District: Mamaroneck Union Free School District

Neighborhood · ZIP 10538These 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.45
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.116
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.111

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.36%
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.1.2%
PopulationHow many people live in this area.15,916
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,547 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$213,783
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$298,547
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.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

81 Prospect 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.

  • Among the most valuable homes in Westchester County
  • Costs more per square foot than 93% of homes in Westchester County
  • Bigger than 97% of homes in Larchmont 10538
  • Older than 97% of homes in Larchmont 10538

What homes are worth in Larchmont 10538

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

This home
$451K$5.2M

This home is worth more than 98% of homes in Larchmont 10538.

How it measures up in Larchmont 10538

The dot is this home. The mark in the middle is the typical home in Larchmont 10538.

Estimated value$4,813,790
CheaperTypical $1,780,910Pricier

Pricier than 98% of homes nearby

Price per ft²$865
CheaperTypical $746Pricier

Pricier than 80% of homes nearby

Living area5,566 ft²
SmallerTypical 2,402 ft²Bigger

Bigger than 97% of homes nearby

Lot size0.2 ac
SmallerTypical 0.19 acBigger

Bigger than 53% of homes nearby

Year built1897
OlderTypical 1930Newer

Newer than 3% of homes nearby

How 81 Prospect Ave ranks against every home in each area.
MeasureThis homeLarchmont 10538Westchester County
Estimated valuepricier than$4,813,79098% of homesalmost all homes
Price per ft²pricier than$86580% of homes93% of homes
Living areabigger than5,566 ft²97% of homes96% of homes
Lot sizebigger than0.2 ac53% of homes49% of homes
Year builtnewer than18973% of homes3% of homes

About 81 Prospect Ave

How much is 81 Prospect Ave, Larchmont, NY worth?

The TopHap Estimate for 81 Prospect Ave, Larchmont, NY is $4,813,790 as of Aug 30, 2026. The likely range is $4,447,904 to $5,179,676. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 81 Prospect Ave, Larchmont, NY last sell?

81 Prospect Ave, Larchmont, NY last sold on Nov 16, 2007 for $2,660,600, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 81 Prospect Ave, Larchmont, NY?

81 Prospect Ave, Larchmont, NY has 5 bedrooms, 4 bathrooms, 5,566 square feet of living space and a 0.20-acre lot.

When was 81 Prospect Ave, Larchmont, NY built?

81 Prospect Ave, Larchmont, NY was built in 1897, making it 129 years old. It is a traditional/old home. The building has 2 stories.

What schools serve 81 Prospect Ave, Larchmont, NY?

81 Prospect Ave, Larchmont, NY is assigned to Chatsworth Avenue Elementary School (elementary), rated A-; Hommocks Middle School (middle), rated B; Mamaroneck High School (high), rated A+. All sit in Mamaroneck Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 81 Prospect Ave, Larchmont, NY compare to other homes in Larchmont 10538?

Among the 4,811 homes in Larchmont 10538, it is worth more than 98% of them ($4,813,790 against a typical $1,780,910), its price per square foot is higher than 80% of them ($865 against a typical $746), it is bigger than 97% of them (5,566 ft² against a typical 2,402 ft²), its lot is bigger than 53% of them (0.2 ac against a typical 0.19 ac) and it is newer than 3% of them (1897 against a typical 1930). Measured against all of Westchester County, it is worth more than almost all 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 81 Prospect Ave, Larchmont, NY?

The 2025 property tax bill for 81 Prospect Ave, Larchmont, NY was $77,631. The county assessed it at $4,782,000.

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