Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$432,696$193 / 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 Oct 21, 2026
Last sold for $227,500 on Oct 28, 2019

4005 BRUNSWICK LN

JANESVILLE, WI 53546
4
Beds
2.5
Baths
2,238 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.
0.3 ac
Lot SizeThe size of the land the home sits on, from county records.
1988
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$433K
$406K low$460K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$227,500 · Oct 28, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,269 (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.$361,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$30,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$330,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$384,223

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.Colonial
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.1991
Lot (acres)The size of the land the home sits on, from county records.0.30
HeatingThe type of heating system in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.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.Deck · 328 ft²Patio · 328 ft²Porch · 96 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
Harrison Elementary SchoolB+
Elementary · Grades KG–5 · 0.3 mi
M
Marshall Middle SchoolC+
Middle · Grades 6–8 · 1.1 mi
H
Craig High SchoolD+
High · Grades 9–12 · 1.9 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%

Owner Tools

Do you own this home?
Claim this home

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

4005 Brunswick Ln 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 87% of homes in Janesville 53546
  • Costs less per square foot than 76% of homes in Janesville 53546
  • Bigger than 91% of homes in Janesville 53546
  • Has a bigger lot than 71% of homes in Janesville 53546
  • Newer than 74% of homes in Rock County

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
$151K$563K

This home is worth more than 87% of 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$432,696
CheaperTypical $314,484Pricier

Pricier than 87% of homes nearby

Price per ft²$193
CheaperTypical $224Pricier

Pricier than 24% of homes nearby

Living area2,238 ft²
SmallerTypical 1,366 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.3 ac
SmallerTypical 0.25 acBigger

Bigger than 71% of homes nearby

Year built1988
OlderTypical 1986Newer

Newer than 53% of homes nearby

How 4005 Brunswick Ln ranks against every home in each area.
MeasureThis homeJanesville 53546Rock County
Estimated valuepricier than$432,69687% of homes84% of homes
Price per ft²pricier than$19324% of homes49% of homes
Living areabigger than2,238 ft²91% of homes88% of homes
Lot sizebigger than0.3 ac71% of homes60% of homes
Year builtnewer than198853% of homes74% of homes

About 4005 Brunswick Ln

How much is 4005 Brunswick Ln, Janesville, WI worth?

The TopHap Estimate for 4005 Brunswick Ln, Janesville, WI is $432,696 as of Oct 21, 2026. The likely range is $405,693 to $459,699. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4005 Brunswick Ln, Janesville, WI last sell?

4005 Brunswick Ln, Janesville, WI last sold on Oct 28, 2019 for $227,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 4005 Brunswick Ln, Janesville, WI?

4005 Brunswick Ln, Janesville, WI has 4 bedrooms, 2.5 bathrooms, 2,238 square feet of living space and a 0.30-acre lot.

When was 4005 Brunswick Ln, Janesville, WI built?

4005 Brunswick Ln, Janesville, WI was built in 1988, making it 38 years old. It is a colonial home. The building has 2 stories.

What schools serve 4005 Brunswick Ln, Janesville, WI?

4005 Brunswick Ln, Janesville, WI is assigned to Harrison Elementary School (elementary), rated B+; Marshall Middle School (middle), rated C+; Craig 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 4005 Brunswick Ln, Janesville, WI compare to other homes in Janesville 53546?

Among the 10,824 homes in Janesville 53546, it is worth more than 87% of them ($432,696 against a typical $314,484), its price per square foot is higher than 24% of them ($193 against a typical $224), it is bigger than 91% of them (2,238 ft² against a typical 1,366 ft²), its lot is bigger than 71% of them (0.3 ac against a typical 0.25 ac) and it is newer than 53% of them (1988 against a typical 1986). Measured against all of Rock County, it is worth more than 84% 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 4005 Brunswick Ln, Janesville, WI?

The 2025 property tax bill for 4005 Brunswick Ln, Janesville, WI was $6,269. The county assessed it at $361,400.

More homes on Brunswick Ln

Closest homes

More homes in Janesville 53546

Assigned schools

Explore the area

See this home in context

Open 4005 Brunswick Ln on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map