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Single Family ResidenceResidential
$140,246$123 / 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 94How 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 $9,500 on May 1, 1993

523 HARDING ST

JANESVILLE, WI 53545
2
Beds
1
Baths
1,140 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.
2,831 ft²
Lot SizeThe size of the land the home sits on, from county records.
1847
Year BuiltThe year the home was originally built, according to county records.
2
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.

Valuation

$140K
$131K low$149K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$9,500 · May 1, 1993

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,936 (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.$122,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$114,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$122,200

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.Old Style
CountyRock
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.1858
Lot (acres)The size of the land the home sits on, from county records.0.07
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 108 ft²

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

E
Adams Elementary SchoolC
Elementary · Grades KG–5 · 0.8 mi
M
Franklin Middle SchoolC-
Middle · Grades 6–8 · 1.3 mi
H
Parker High SchoolD+
High · Grades 9–12 · 2.0 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

523 Harding 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.

  • Among the least valuable homes in Janesville 53545
  • Costs less per square foot than 96% of homes in Janesville 53545
  • Smaller than 78% of homes in Janesville 53545
  • Among the smallest lots in Janesville 53545
  • Among the oldest homes in Janesville 53545

What homes are worth in Janesville 53545

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

This home
$158K$738K

This home is worth less than almost all 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.

Estimated value$140,246
CheaperTypical $281,713Pricier

Cheaper than almost all homes nearby

Price per ft²$123
CheaperTypical $202Pricier

Pricier than 4% of homes nearby

Living area1,140 ft²
SmallerTypical 1,434 ft²Bigger

Bigger than 22% of homes nearby

Lot size2,831 ft²
SmallerTypical 0.23 acBigger

Smaller than almost all homes nearby

Year built1847
OlderTypical 1959Newer

Older than almost all homes nearby

How 523 Harding St ranks against every home in each area.
MeasureThis homeJanesville 53545Rock County
Estimated valuepricier than$140,246almost no homes8% of homes
Price per ft²pricier than$1234% of homes12% of homes
Living areabigger than1,140 ft²22% of homes28% of homes
Lot sizebigger than2,831 ft²almost no homesalmost no homes
Year builtnewer than1847almost no homesalmost no homes

About 523 Harding St

How much is 523 Harding St, Janesville, WI worth?

The TopHap Estimate for 523 Harding St, Janesville, WI is $140,246 as of Sep 24, 2026. The likely range is $131,244 to $149,248. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 523 Harding St, Janesville, WI last sell?

523 Harding St, Janesville, WI last sold on May 1, 1993 for $9,500, according to the county's recorded deed.

How big is 523 Harding St, Janesville, WI?

523 Harding St, Janesville, WI has 2 bedrooms, 1 bathrooms, 1,140 square feet of living space and a 0.07-acre lot.

When was 523 Harding St, Janesville, WI built?

523 Harding St, Janesville, WI was built in 1847, making it 179 years old. It is a old style home. The building has 2 stories.

What schools serve 523 Harding St, Janesville, WI?

523 Harding St, Janesville, WI is assigned to Adams Elementary School (elementary), rated C; Franklin Middle School (middle), rated C-; Parker High School (high), rated D+. All sit in Janesville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 523 Harding St, Janesville, WI compare to other homes in Janesville 53545?

Among the 7,842 homes in Janesville 53545, it is worth more than almost none of them ($140,246 against a typical $281,713), its price per square foot is higher than 4% of them ($123 against a typical $202), it is bigger than 22% of them (1,140 ft² against a typical 1,434 ft²), its lot is bigger than almost none of them (2,831 ft² against a typical 0.23 ac) and it is newer than almost none of them (1847 against a typical 1959). Measured against all of Rock County, it is worth more than 8% 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 523 Harding St, Janesville, WI?

The 2025 property tax bill for 523 Harding St, Janesville, WI was $1,936. The county assessed it at $122,200.

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