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Single Family ResidenceResidential
$528,363$137 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

3621 W FOREST LN

JANESVILLE, WI 53545
4
Beds
4 / 1
Baths
3,865 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.
1.47 ac
Lot SizeThe size of the land the home sits on, from county records.
1981
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$528K
$493K low$564K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,830 (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.$539,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$83,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$456,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$539,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$601,200

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.Ranch
CountyRock
Lot (acres)The size of the land the home sits on, from county records.1.47
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Baseboard
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached

Transaction History(1)

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
Consolidated Elementary SchoolA+
Elementary · Grades KG–3 · 1.1 mi
H
Milton High SchoolB
High · Grades 9–12 · 6.4 mi
M
Milton Middle SchoolC
Middle · Grades 7–8 · 6.8 mi

District: Milton 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

3621 W Forest 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 94% of homes in Janesville 53545
  • Costs less per square foot than 89% of homes in Janesville 53545
  • Among the largest homes in Rock County
  • Has a bigger lot than 93% of homes in Janesville 53545
  • Newer than 85% of 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
$145K$709K

This home is worth more than 94% 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.

Estimated value$528,363
CheaperTypical $275,884Pricier

Pricier than 94% of homes nearby

Price per ft²$137
CheaperTypical $196Pricier

Pricier than 11% of homes nearby

Living area3,865 ft²
SmallerTypical 1,434 ft²Bigger

Bigger than 98% of homes nearby

Lot size1.47 ac
SmallerTypical 0.23 acBigger

Bigger than 93% of homes nearby

Year built1981
OlderTypical 1958Newer

Newer than 85% of homes nearby

How 3621 W Forest Ln ranks against every home in each area.
MeasureThis homeJanesville 53545Rock County
Estimated valuepricier than$528,36394% of homes94% of homes
Price per ft²pricier than$13711% of homes22% of homes
Living areabigger than3,865 ft²98% of homesalmost all homes
Lot sizebigger than1.47 ac93% of homes88% of homes
Year builtnewer than198185% of homes71% of homes

About 3621 W Forest Ln

How much is 3621 W Forest Ln, Janesville, WI worth?

The TopHap Estimate for 3621 W Forest Ln, Janesville, WI is $528,363 as of Aug 30, 2026. The likely range is $492,620 to $564,106. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 3621 W Forest Ln, Janesville, WI?

3621 W Forest Ln, Janesville, WI has 4 bedrooms, 4 bathrooms, 3,865 square feet of living space and a 1.47-acre lot.

When was 3621 W Forest Ln, Janesville, WI built?

3621 W Forest Ln, Janesville, WI was built in 1981, making it 45 years old. It is a ranch home. The building has 1 story.

What schools serve 3621 W Forest Ln, Janesville, WI?

3621 W Forest Ln, Janesville, WI is assigned to Consolidated Elementary School (elementary), rated A+; Milton High School (high), rated B; Milton Middle School (middle), rated C. All sit in Milton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3621 W Forest Ln, Janesville, WI compare to other homes in Janesville 53545?

Among the 7,842 homes in Janesville 53545, it is worth more than 94% of them ($528,363 against a typical $275,884), its price per square foot is higher than 11% of them ($137 against a typical $196), it is bigger than 98% of them (3,865 ft² against a typical 1,434 ft²), its lot is bigger than 93% of them (1.47 ac against a typical 0.23 ac) and it is newer than 85% of them (1981 against a typical 1958). Measured against all of Rock County, it is worth more than 94% 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 3621 W Forest Ln, Janesville, WI?

The 2025 property tax bill for 3621 W Forest Ln, Janesville, WI was $6,830. The county assessed it at $539,500.

More homes on W Forest Ln

Closest homes

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Assigned schools

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