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Single Family ResidenceResidential
$166,521$134 / 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 72How 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

405 ROCK ST

JANESVILLE, WI 53548
4
Beds
1
Baths
1,240 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.
3,441 ft²
Lot SizeThe size of the land the home sits on, from county records.
1902
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

$167K
$121K low$212K high
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.$91,521
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$73,217
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.53%
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.$75,000
BLACKHAWK COMMUNITY CU · recorded Dec 6, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$931 (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.$55,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$48,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$58,686

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
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.1916
Lot (acres)The size of the land the home sits on, from county records.0.08
HeatingThe type of heating system in the home.Yes
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 · 96 ft²

Transaction History(3)

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
Wilson Elementary SchoolD
Elementary · Grades KG–5 · 0.3 mi
M
Franklin Middle SchoolC-
Middle · Grades 6–8 · 1.5 mi
H
Parker High SchoolD+
High · Grades 9–12 · 2.1 mi

District: Janesville School District

Neighborhood · ZIP 53548These 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.92
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
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.17%
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.1.1%
PopulationHow many people live in this area.20,818
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.284 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,018
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,665
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.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

405 Rock 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.

  • Worth less than 85% of homes in Rock County
  • Costs less per square foot than 81% of homes in Rock County
  • Smaller than 68% of homes in Janesville 53548
  • Among the smallest lots in Rock County
  • Older than 88% of homes in Rock County

What homes are worth in Janesville 53548

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

This home
$90K$761K

This home is worth more than 16% of homes in Janesville 53548.

How it measures up in Janesville 53548

The dot is this home. The mark in the middle is the typical home in Janesville 53548.

Estimated value$166,521
CheaperTypical $280,477Pricier

Pricier than 16% of homes nearby

Price per ft²$134
CheaperTypical $191Pricier

Pricier than 20% of homes nearby

Living area1,240 ft²
SmallerTypical 1,450 ft²Bigger

Bigger than 32% of homes nearby

Lot size3,441 ft²
SmallerTypical 0.25 acBigger

Bigger than 2% of homes nearby

Year built1902
OlderTypical 1963Newer

Newer than 19% of homes nearby

How 405 Rock St ranks against every home in each area.
MeasureThis homeJanesville 53548Rock County
Estimated valuepricier than$166,52116% of homes15% of homes
Price per ft²pricier than$13420% of homes19% of homes
Living areabigger than1,240 ft²32% of homes38% of homes
Lot sizebigger than3,441 ft²2% of homesalmost no homes
Year builtnewer than190219% of homes12% of homes

About 405 Rock St

How much is 405 Rock St, Janesville, WI worth?

The TopHap Estimate for 405 Rock St, Janesville, WI is $166,521 as of Jul 14, 2026. The likely range is $120,643 to $212,399. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 405 Rock St, Janesville, WI last sell?

405 Rock St, Janesville, WI last sold on Jul 7, 2023, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 405 Rock St, Janesville, WI?

405 Rock St, Janesville, WI has 4 bedrooms, 1 bathrooms, 1,240 square feet of living space and a 0.08-acre lot.

When was 405 Rock St, Janesville, WI built?

405 Rock St, Janesville, WI was built in 1902, making it 124 years old. The building has 2 stories.

What schools serve 405 Rock St, Janesville, WI?

405 Rock St, Janesville, WI is assigned to Wilson Elementary School (elementary), rated D; 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 405 Rock St, Janesville, WI compare to other homes in Janesville 53548?

Among the 6,715 homes in Janesville 53548, it is worth more than 16% of them ($166,521 against a typical $280,477), its price per square foot is higher than 20% of them ($134 against a typical $191), it is bigger than 32% of them (1,240 ft² against a typical 1,450 ft²), its lot is bigger than 2% of them (3,441 ft² against a typical 0.25 ac) and it is newer than 19% of them (1902 against a typical 1963). Measured against all of Rock County, it is worth more than 15% 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 405 Rock St, Janesville, WI?

The 2025 property tax bill for 405 Rock St, Janesville, WI was $931. The county assessed it at $55,200.

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Assigned schools

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