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Single Family ResidenceResidential
$1,829,396$462 / 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 90How 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 $1,230,000 on Oct 13, 2020

258 MILL RIVER RD

CHAPPAQUA, NY 10514
4
Beds
6
Baths
3,964 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.
2.93 ac
Lot SizeThe size of the land the home sits on, from county records.
2017
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$1.8M
$1.6M low$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.$1,230,000 · Oct 13, 2020

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.$14,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$11,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$16,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,386,139

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.39
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
19
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.
94
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.Colonial
CountyWESTCHESTER
Lot (acres)The size of the land the home sits on, from county records.2.93
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(5)

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
Bedford Road Elementary SchoolB+
Elementary · Grades KG–4 · 0.9 mi
M
Pleasantville Middle SchoolA-
Middle · Grades 5–8 · 1.2 mi
H
Pleasantville High SchoolA
High · Grades 9–12 · 1.3 mi

District: Pleasantville Union Free School District

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

258 Mill River Rd 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 86% of homes in Westchester County
  • Costs less per square foot than 91% of homes in Chappaqua 10514
  • Bigger than 90% of homes in Westchester County
  • Has a bigger lot than 97% of homes in Westchester County
  • Among the newest 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
$549K$3.5M

This home is worth more than 68% of 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$1,829,396
CheaperTypical $1,542,606Pricier

Pricier than 68% of homes nearby

Price per ft²$462
CheaperTypical $567Pricier

Pricier than 9% of homes nearby

Living area3,964 ft²
SmallerTypical 2,846 ft²Bigger

Bigger than 80% of homes nearby

Lot size2.93 ac
SmallerTypical 1.01 acBigger

Bigger than 95% of homes nearby

Year built2017
OlderTypical 1963Newer

Newer than 97% of homes nearby

How 258 Mill River Rd ranks against every home in each area.
MeasureThis homeChappaqua 10514Westchester County
Estimated valuepricier than$1,829,39668% of homes86% of homes
Price per ft²pricier than$4629% of homes35% of homes
Living areabigger than3,964 ft²80% of homes90% of homes
Lot sizebigger than2.93 ac95% of homes97% of homes
Year builtnewer than201797% of homesalmost all homes

About 258 Mill River Rd

How much is 258 Mill River Rd, Chappaqua, NY worth?

The TopHap Estimate for 258 Mill River Rd, Chappaqua, NY is $1,829,396 as of Sep 24, 2026. The likely range is $1,647,984 to $2,010,808. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 258 Mill River Rd, Chappaqua, NY last sell?

258 Mill River Rd, Chappaqua, NY last sold on Oct 13, 2020 for $1,230,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 258 Mill River Rd, Chappaqua, NY?

258 Mill River Rd, Chappaqua, NY has 4 bedrooms, 6 bathrooms, 3,964 square feet of living space and a 2.93-acre lot.

When was 258 Mill River Rd, Chappaqua, NY built?

258 Mill River Rd, Chappaqua, NY was built in 2017, making it 9 years old. It is a colonial home. The building has 2 stories.

What schools serve 258 Mill River Rd, Chappaqua, NY?

258 Mill River Rd, Chappaqua, NY is assigned to Bedford Road Elementary School (elementary), rated B+; Pleasantville Middle School (middle), rated A-; Pleasantville High School (high), rated A. All sit in Pleasantville Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 258 Mill River Rd, Chappaqua, NY compare to other homes in Chappaqua 10514?

Among the 4,007 homes in Chappaqua 10514, it is worth more than 68% of them ($1,829,396 against a typical $1,542,606), its price per square foot is higher than 9% of them ($462 against a typical $567), it is bigger than 80% of them (3,964 ft² against a typical 2,846 ft²), its lot is bigger than 95% of them (2.93 ac against a typical 1.01 ac) and it is newer than 97% of them (2017 against a typical 1963). Measured against all of Westchester County, it is worth more than 86% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on Mill River Rd

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Assigned schools

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