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Duplex (2 Units, Any Combination)Residential
Last sold for $60,900 on Mar 3, 2008

309 S MAIN ST

JANESVILLE, WI 53545
4
Beds
2
Baths
2,062 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.
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$60,900 · Mar 3, 2008

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,030 (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.$171,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$155,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$171,100

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Old Style
CountyRock
Lot (acres)The size of the land the home sits on, from county records.0.12
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 260 ft²

Transaction History(2)

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
Roosevelt Elementary SchoolA+
Elementary · Grades KG–5 · 0.6 mi
H
Craig High SchoolD+
High · Grades 9–12 · 0.9 mi
M
Edison Middle SchoolC
Middle · Grades 6–8 · 1.9 mi

District: Janesville School District

Neighborhood · ZIP 53545These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.30

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.22,576
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.928 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$73,159
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,377
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.34 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

309 S Main St 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.

  • Bigger than 84% of homes in Rock County
  • Has a smaller lot than 96% of homes in Rock County
  • Older than 89% of homes in Janesville 53545

How it measures up in Janesville 53545

The dot is this home. The mark in the middle is the typical home in Janesville 53545.

Living area2,062 ft²
SmallerTypical 1,435 ft²Bigger

Bigger than 82% of homes nearby

Lot size0.12 ac
SmallerTypical 0.23 acBigger

Bigger than 6% of homes nearby

Year built1900
OlderTypical 1958Newer

Newer than 11% of homes nearby

How 309 S Main St ranks against every home in each area.
MeasureThis homeJanesville 53545Rock County
Living areabigger than2,062 ft²82% of homes84% of homes
Lot sizebigger than0.12 ac6% of homes4% of homes
Year builtnewer than190011% of homes11% of homes

About 309 S Main St

When did 309 S Main St, Janesville, WI last sell?

309 S Main St, Janesville, WI last sold on Mar 3, 2008 for $60,900, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 309 S Main St, Janesville, WI?

309 S Main St, Janesville, WI has 4 bedrooms, 2 bathrooms, 2,062 square feet of living space and a 0.12-acre lot.

When was 309 S Main St, Janesville, WI built?

309 S Main St, Janesville, WI was built in 1900, making it 126 years old. It is a old style home. The building has 2 stories.

What schools serve 309 S Main St, Janesville, WI?

309 S Main St, Janesville, WI is assigned to Roosevelt Elementary School (elementary), rated A+; Craig High School (high), rated D+; Edison Middle School (middle), rated C. All sit in Janesville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 309 S Main St, Janesville, WI compare to other homes in Janesville 53545?

Among the 7,842 homes in Janesville 53545, it is bigger than 82% of them (2,062 ft² against a typical 1,435 ft²), its lot is bigger than 6% of them (0.12 ac against a typical 0.23 ac) and it is newer than 11% of them (1900 against a typical 1958). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 309 S Main St, Janesville, WI?

The 2025 property tax bill for 309 S Main St, Janesville, WI was $3,030. The county assessed it at $171,100.

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