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Rural ResidenceResidential
$241,177$209 / 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 95How 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

3900 COUNTY ROUTE 121

MANNSVILLE, NY 13661
2
Beds
2
Baths
1,152 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.
117.5 ac
Lot SizeThe size of the land the home sits on, from county records.
2001
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$241K
$229K low$253K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,603 (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.$153,600 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$95,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$58,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$153,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$207,568

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
StyleThe architectural style of the home, such as ranch or colonial.Modular
CountyJefferson
Lot (acres)The size of the land the home sits on, from county records.117.50
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
HeatingThe type of heating system in the home.Forced Air
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 120 ft²

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

E
Belleville Henderson Central SchoolC-
Elementary · Grades PK–12 · 4.5 mi

District: Belleville Henderson Central School District

Neighborhood · ZIP 13661These 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.100
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.48

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.57%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.1,867
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.37 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$84,706
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$94,319
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.46%

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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

3900 County Route 121 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 70% of homes in Mannsville 13661
  • Costs more per square foot than 95% of homes in Mannsville 13661
  • Smaller than 73% of homes in Jefferson County
  • Has a bigger lot than 98% of homes in Jefferson County
  • Newer than 84% of homes in Mannsville 13661

What homes are worth in Mannsville 13661

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

This home
$76K$454K

This home is worth more than 70% of homes in Mannsville 13661.

How it measures up in Mannsville 13661

The dot is this home. The mark in the middle is the typical home in Mannsville 13661.

Estimated value$241,177
CheaperTypical $190,483Pricier

Pricier than 70% of homes nearby

Price per ft²$209
CheaperTypical $113Pricier

Pricier than 95% of homes nearby

Living area1,152 ft²
SmallerTypical 1,472 ft²Bigger

Bigger than 30% of homes nearby

Lot size117.5 ac
SmallerTypical 1.49 acBigger

Bigger than 96% of homes nearby

Year built2001
OlderTypical 1963Newer

Newer than 84% of homes nearby

How 3900 County Route 121 ranks against every home in each area.
MeasureThis homeMannsville 13661Jefferson County
Estimated valuepricier than$241,17770% of homes66% of homes
Price per ft²pricier than$20995% of homes89% of homes
Living areabigger than1,152 ft²30% of homes27% of homes
Lot sizebigger than117.5 ac96% of homes98% of homes
Year builtnewer than200184% of homes84% of homes

About 3900 County Route 121

How much is 3900 County Route 121, Mannsville, NY worth?

The TopHap Estimate for 3900 County Route 121, Mannsville, NY is $241,177 as of Aug 30, 2026. The likely range is $229,459 to $252,895. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 3900 County Route 121, Mannsville, NY?

3900 County Route 121, Mannsville, NY has 2 bedrooms, 2 bathrooms, 1,152 square feet of living space and a 117.50-acre lot.

When was 3900 County Route 121, Mannsville, NY built?

3900 County Route 121, Mannsville, NY was built in 2001, making it 25 years old. It is a modular home. The building has 1 story.

What schools serve 3900 County Route 121, Mannsville, NY?

3900 County Route 121, Mannsville, NY is assigned to Belleville Henderson Central School (elementary), rated C-. All sit in Belleville Henderson Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3900 County Route 121, Mannsville, NY compare to other homes in Mannsville 13661?

Among the 873 homes in Mannsville 13661, it is worth more than 70% of them ($241,177 against a typical $190,483), its price per square foot is higher than 95% of them ($209 against a typical $113), it is bigger than 30% of them (1,152 ft² against a typical 1,472 ft²), its lot is bigger than 96% of them (117.5 ac against a typical 1.49 ac) and it is newer than 84% of them (2001 against a typical 1963). Measured against all of Jefferson County, it is worth more than 66% 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 3900 County Route 121, Mannsville, NY?

The 2024 property tax bill for 3900 County Route 121, Mannsville, NY was $2,603. The county assessed it at $153,600.

More homes on County Route 121

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More homes in Mannsville 13661

Assigned schools

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