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Single Family ResidenceResidential
$740,361$220 / 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 89How 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 $679,900 on Mar 17, 2025

3657 W FOREST LN

JANESVILLE, WI 53545
4
Beds
2.5
Baths
3,360 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.
3.07 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$740K
$658K low$823K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$679,900 · Mar 17, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,403 (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.$659,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$127,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$532,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$735,100

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
Lot (acres)The size of the land the home sits on, from county records.3.07
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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
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

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 · 1.2 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

3657 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.

  • Among the most valuable homes in Rock County
  • Costs more per square foot than 77% of homes in Rock County
  • Bigger than 98% of homes in Rock County
  • Has a bigger lot than 98% of homes in Janesville 53545
  • Newer than 77% 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
$147K$699K

This home is worth more than 98% 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$740,361
CheaperTypical $275,926Pricier

Pricier than 98% of homes nearby

Price per ft²$220
CheaperTypical $196Pricier

Pricier than 71% of homes nearby

Living area3,360 ft²
SmallerTypical 1,434 ft²Bigger

Bigger than 97% of homes nearby

Lot size3.07 ac
SmallerTypical 0.23 acBigger

Bigger than 98% of homes nearby

Year built1973
OlderTypical 1959Newer

Newer than 77% of homes nearby

How 3657 W Forest Ln ranks against every home in each area.
MeasureThis homeJanesville 53545Rock County
Estimated valuepricier than$740,36198% of homesalmost all homes
Price per ft²pricier than$22071% of homes77% of homes
Living areabigger than3,360 ft²97% of homes98% of homes
Lot sizebigger than3.07 ac98% of homes93% of homes
Year builtnewer than197377% of homes63% of homes

About 3657 W Forest Ln

How much is 3657 W Forest Ln, Janesville, WI worth?

The TopHap Estimate for 3657 W Forest Ln, Janesville, WI is $740,361 as of Aug 30, 2026. The likely range is $657,650 to $823,072. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3657 W Forest Ln, Janesville, WI last sell?

3657 W Forest Ln, Janesville, WI last sold on Mar 17, 2025 for $679,900, according to the county's recorded deed.

How big is 3657 W Forest Ln, Janesville, WI?

3657 W Forest Ln, Janesville, WI has 4 bedrooms, 2.5 bathrooms, 3,360 square feet of living space and a 3.07-acre lot.

When was 3657 W Forest Ln, Janesville, WI built?

3657 W Forest Ln, Janesville, WI was built in 1973, making it 53 years old. It is a colonial home. The building has 2 stories.

What schools serve 3657 W Forest Ln, Janesville, WI?

3657 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 3657 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 98% of them ($740,361 against a typical $275,926), its price per square foot is higher than 71% of them ($220 against a typical $196), it is bigger than 97% of them (3,360 ft² against a typical 1,434 ft²), its lot is bigger than 98% of them (3.07 ac against a typical 0.23 ac) and it is newer than 77% of them (1973 against a typical 1959). Measured against all of Rock County, it is worth more than almost all 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 3657 W Forest Ln, Janesville, WI?

The 2025 property tax bill for 3657 W Forest Ln, Janesville, WI was $8,403. The county assessed it at $659,700.

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