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Single Family ResidenceResidential
$668,312$542 / 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 93How 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

23 PROSPECT AVE

VALHALLA, NY 10595
3
Beds
1
Baths
1,232 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.
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1906
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$668K
$619K low$718K high

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$6,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,750
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$4,650
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$6,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$633,663

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.
4
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
65
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
90
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.Cape Cod
CountyWESTCHESTER
Lot (acres)The size of the land the home sits on, from county records.0.33
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
Valhalla Middle SchoolA-
Middle · Grades 6–8 · 1.0 mi
E
Virginia Road Elementary School
Elementary · Grades KG–2 · 1.0 mi
H
Valhalla High SchoolA
High · Grades 9–12 · 1.0 mi

District: Valhalla Union Free School District

Neighborhood · ZIP 10595These 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.67
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.112
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.108

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.8,911
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,341 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$121,492
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$152,218
Average tempThe average temperature here across a full year.52°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

23 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.

  • Worth less than 90% of homes in Valhalla 10595
  • Costs more per square foot than 72% of homes in Valhalla 10595
  • Smaller than 89% of homes in Westchester County
  • Has a bigger lot than 66% of homes in Westchester County
  • Older than 97% of homes in Valhalla 10595

What homes are worth in Valhalla 10595

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

This home
$561K$1.8M

This home is worth more than 10% of homes in Valhalla 10595.

How it measures up in Valhalla 10595

The dot is this home. The mark in the middle is the typical home in Valhalla 10595.

Estimated value$668,312
CheaperTypical $870,997Pricier

Pricier than 10% of homes nearby

Price per ft²$542
CheaperTypical $477Pricier

Pricier than 72% of homes nearby

Living area1,232 ft²
SmallerTypical 1,876 ft²Bigger

Bigger than 13% of homes nearby

Lot size0.33 ac
SmallerTypical 0.25 acBigger

Bigger than 61% of homes nearby

Year built1906
OlderTypical 1956Newer

Newer than 3% of homes nearby

How 23 Prospect Ave ranks against every home in each area.
MeasureThis homeValhalla 10595Westchester County
Estimated valuepricier than$668,31210% of homes27% of homes
Price per ft²pricier than$54272% of homes58% of homes
Living areabigger than1,232 ft²13% of homes11% of homes
Lot sizebigger than0.33 ac61% of homes66% of homes
Year builtnewer than19063% of homes7% of homes

About 23 Prospect Ave

How much is 23 Prospect Ave, Valhalla, NY worth?

The TopHap Estimate for 23 Prospect Ave, Valhalla, NY is $668,312 as of Sep 24, 2026. The likely range is $618,535 to $718,089. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 23 Prospect Ave, Valhalla, NY last sell?

23 Prospect Ave, Valhalla, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 23 Prospect Ave, Valhalla, NY?

23 Prospect Ave, Valhalla, NY has 3 bedrooms, 1 bathrooms, 1,232 square feet of living space and a 0.33-acre lot.

When was 23 Prospect Ave, Valhalla, NY built?

23 Prospect Ave, Valhalla, NY was built in 1906, making it 120 years old. It is a cape cod home. The building has 2 stories.

What schools serve 23 Prospect Ave, Valhalla, NY?

23 Prospect Ave, Valhalla, NY is assigned to Valhalla Middle School (middle), rated A-; Virginia Road Elementary School (elementary); Valhalla High School (high), rated A. All sit in Valhalla Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 23 Prospect Ave, Valhalla, NY compare to other homes in Valhalla 10595?

Among the 1,815 homes in Valhalla 10595, it is worth more than 10% of them ($668,312 against a typical $870,997), its price per square foot is higher than 72% of them ($542 against a typical $477), it is bigger than 13% of them (1,232 ft² against a typical 1,876 ft²), its lot is bigger than 61% of them (0.33 ac against a typical 0.25 ac) and it is newer than 3% of them (1906 against a typical 1956). Measured against all of Westchester County, it is worth more than 27% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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