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Single Family ResidenceResidential
$531,404$451 / 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 96How 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 $389,000 on May 9, 2022

21 SPLIT ROCK RD

MAHOPAC, NY 10541
2
Beds
1
Baths
1,177 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.
0.45 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$531K
$509K low$554K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$389,000 · May 9, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,681 (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.$453,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$125,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$328,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$427,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$453,400

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.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
21
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
59
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
97
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.Ranch
CountyPUTNAM
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1987
Lot (acres)The size of the land the home sits on, from county records.0.45
HeatingThe type of heating system in the home.Hot Water
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
ViewThe type of view from the property, or another feature of the site that affects value.Waterfront
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 264 ft²Porch · 396 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.

Foreclosure Filings(2)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Lakeview Elementary SchoolB-
Elementary · Grades KG–5 · 1.8 mi
M
Mahopac Middle SchoolA
Middle · Grades 6–10 · 1.9 mi
H
Mahopac High SchoolB+
High · Grades 7–12 · 2.2 mi

District: Mahopac Central School District

Neighborhood · ZIP 10541These 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.69
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.93

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.1%
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.25,746
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.975 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$132,815
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$150,268
Average tempThe average temperature here across a full year.49°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.58%

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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

21 Split Rock 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 less than 75% of homes in Mahopac 10541
  • Costs more per square foot than 91% of homes in Mahopac 10541
  • Smaller than 88% of homes in Mahopac 10541
  • Has a smaller lot than 66% of homes in Mahopac 10541
  • Older than 75% of homes in Mahopac 10541

What homes are worth in Mahopac 10541

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

This home
$324K$1.3M

This home is worth more than 25% of homes in Mahopac 10541.

How it measures up in Mahopac 10541

The dot is this home. The mark in the middle is the typical home in Mahopac 10541.

Estimated value$531,404
CheaperTypical $631,478Pricier

Pricier than 25% of homes nearby

Price per ft²$451
CheaperTypical $331Pricier

Pricier than 91% of homes nearby

Living area1,177 ft²
SmallerTypical 1,935 ft²Bigger

Bigger than 12% of homes nearby

Lot size0.45 ac
SmallerTypical 0.52 acBigger

Bigger than 34% of homes nearby

Year built1950
OlderTypical 1966Newer

Newer than 25% of homes nearby

How 21 Split Rock Rd ranks against every home in each area.
MeasureThis homeMahopac 10541Putnam County
Estimated valuepricier than$531,40425% of homes42% of homes
Price per ft²pricier than$45191% of homes90% of homes
Living areabigger than1,177 ft²12% of homes18% of homes
Lot sizebigger than0.45 ac34% of homes41% of homes
Year builtnewer than195025% of homes29% of homes

About 21 Split Rock Rd

How much is 21 Split Rock Rd, Mahopac, NY worth?

The TopHap Estimate for 21 Split Rock Rd, Mahopac, NY is $531,404 as of Sep 24, 2026. The likely range is $508,608 to $554,200. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Split Rock Rd, Mahopac, NY last sell?

21 Split Rock Rd, Mahopac, NY last sold on May 9, 2022 for $389,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 21 Split Rock Rd, Mahopac, NY?

21 Split Rock Rd, Mahopac, NY has 2 bedrooms, 1 bathrooms, 1,177 square feet of living space and a 0.45-acre lot.

When was 21 Split Rock Rd, Mahopac, NY built?

21 Split Rock Rd, Mahopac, NY was built in 1950, making it 76 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Split Rock Rd, Mahopac, NY?

21 Split Rock Rd, Mahopac, NY is assigned to Lakeview Elementary School (elementary), rated B-; Mahopac Middle School (middle), rated A; Mahopac High School (high), rated B+. All sit in Mahopac Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Split Rock Rd, Mahopac, NY compare to other homes in Mahopac 10541?

Among the 8,709 homes in Mahopac 10541, it is worth more than 25% of them ($531,404 against a typical $631,478), its price per square foot is higher than 91% of them ($451 against a typical $331), it is bigger than 12% of them (1,177 ft² against a typical 1,935 ft²), its lot is bigger than 34% of them (0.45 ac against a typical 0.52 ac) and it is newer than 25% of them (1950 against a typical 1966). Measured against all of Putnam County, it is worth more than 42% 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 21 Split Rock Rd, Mahopac, NY?

The 2024 property tax bill for 21 Split Rock Rd, Mahopac, NY was $11,681. The county assessed it at $453,400.

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