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Single Family ResidenceResidential
$412,134$185 / 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 91How 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
Last sold for $390,000 on Jul 25, 2023

3639 W FOREST LN

JANESVILLE, WI 53545
3
Beds
2
Baths
2,229 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.
1.86 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
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

$412K
$375K low$449K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$390,000 · Jul 25, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,425 (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.$355,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$93,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$262,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$355,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$396,500

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.31
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
26
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
66
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
62
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
3
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

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.1.86
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes

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
Consolidated Elementary SchoolA+
Elementary · Grades KG–3 · 1.1 mi
H
Milton High SchoolB
High · Grades 9–12 · 6.5 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

3639 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 87% of homes in Janesville 53545
  • Bigger than 88% of homes in Rock County
  • Has a bigger lot than 96% of homes in Janesville 53545
  • Newer than 76% 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
$142K$696K

This home is worth more than 87% 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$412,134
CheaperTypical $275,988Pricier

Pricier than 87% of homes nearby

Price per ft²$185
CheaperTypical $196Pricier

Pricier than 41% of homes nearby

Living area2,229 ft²
SmallerTypical 1,432 ft²Bigger

Bigger than 86% of homes nearby

Lot size1.86 ac
SmallerTypical 0.23 acBigger

Bigger than 96% of homes nearby

Year built1972
OlderTypical 1958Newer

Newer than 76% of homes nearby

How 3639 W Forest Ln ranks against every home in each area.
MeasureThis homeJanesville 53545Rock County
Estimated valuepricier than$412,13487% of homes84% of homes
Price per ft²pricier than$18541% of homes54% of homes
Living areabigger than2,229 ft²86% of homes88% of homes
Lot sizebigger than1.86 ac96% of homes90% of homes
Year builtnewer than197276% of homes62% of homes

About 3639 W Forest Ln

How much is 3639 W Forest Ln, Janesville, WI worth?

The TopHap Estimate for 3639 W Forest Ln, Janesville, WI is $412,134 as of Aug 30, 2026. The likely range is $375,384 to $448,883. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3639 W Forest Ln, Janesville, WI last sell?

3639 W Forest Ln, Janesville, WI last sold on Jul 25, 2023 for $390,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 3639 W Forest Ln, Janesville, WI?

3639 W Forest Ln, Janesville, WI has 3 bedrooms, 2 bathrooms, 2,229 square feet of living space and a 1.86-acre lot.

When was 3639 W Forest Ln, Janesville, WI built?

3639 W Forest Ln, Janesville, WI was built in 1972, making it 54 years old. It is a ranch home. The building has 1 story.

What schools serve 3639 W Forest Ln, Janesville, WI?

3639 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 3639 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 87% of them ($412,134 against a typical $275,988), its price per square foot is higher than 41% of them ($185 against a typical $196), it is bigger than 86% of them (2,229 ft² against a typical 1,432 ft²), its lot is bigger than 96% of them (1.86 ac against a typical 0.23 ac) and it is newer than 76% of them (1972 against a typical 1958). 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 3639 W Forest Ln, Janesville, WI?

The 2025 property tax bill for 3639 W Forest Ln, Janesville, WI was $4,425. The county assessed it at $355,800.

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