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Single Family ResidenceResidential
$615,000
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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $382,000 on Sep 10, 2020

4135 S RIVER RD

JANESVILLE, WI 53546
0
Baths
2.01 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$615K
$545K low$685K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$382,000 · Sep 10, 2020
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$309,400
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$247,520
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.52%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$305,600
FIRST NATIONAL BANK & TRUST CO · recorded Sep 10, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,235 (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.$361,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$32,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$329,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$361,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$606,300

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyRock
Lot (acres)The size of the land the home sits on, from county records.2.01
HeatingThe type of heating system in the home.None

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.

M
Edison Middle SchoolC
Middle · Grades 6–8 · 2.9 mi
E
Jackson Elementary SchoolA-
Elementary · Grades KG–5 · 2.9 mi
H
Craig High SchoolC
High · Grades 9–12 · 5.4 mi

District: Janesville School District

Neighborhood · ZIP 53546These 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.102
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.32

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.9%
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.31,634
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.403 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$73,028
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,718
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.35 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

4135 S 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.

  • Among the most valuable homes in Janesville 53546
  • Has a bigger lot than 97% of homes in Janesville 53546

What homes are worth in Janesville 53546

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

This home
$138K$564K

This home is worth more than almost all homes in Janesville 53546.

How it measures up in Janesville 53546

The dot is this home. The mark in the middle is the typical home in Janesville 53546.

Estimated value$615,000
CheaperTypical $304,403Pricier

Pricier than almost all homes nearby

Lot size2.01 ac
SmallerTypical 0.25 acBigger

Bigger than 97% of homes nearby

How 4135 S River Rd ranks against every home in each area.
MeasureThis homeJanesville 53546Rock County
Estimated valuepricier than$615,000almost all homes96% of homes
Lot sizebigger than2.01 ac97% of homes91% of homes

About 4135 S River Rd

How much is 4135 S River Rd, Janesville, WI worth?

The TopHap Estimate for 4135 S River Rd, Janesville, WI is $615,000 as of Jul 14, 2026. The likely range is $544,948 to $685,052. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4135 S River Rd, Janesville, WI last sell?

4135 S River Rd, Janesville, WI last sold on Sep 10, 2020 for $382,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

What schools serve 4135 S River Rd, Janesville, WI?

4135 S River Rd, Janesville, WI is assigned to Edison Middle School (middle), rated C; Jackson Elementary School (elementary), rated A-; Craig High School (high), rated C. All sit in Janesville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4135 S River Rd, Janesville, WI compare to other homes in Janesville 53546?

Among the 10,824 homes in Janesville 53546, it is worth more than almost all of them ($615,000 against a typical $304,403) and its lot is bigger than 97% of them (2.01 ac against a typical 0.25 ac). Measured against all of Rock County, it is worth more than 96% 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 4135 S River Rd, Janesville, WI?

The 2025 property tax bill for 4135 S River Rd, Janesville, WI was $7,235. The county assessed it at $361,700.

Closest homes

More homes in Janesville 53546

Assigned schools

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