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Single Family ResidenceResidential
$479,628$159 / 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 92How 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

4144 N RIVER HILLS CT

JANESVILLE, WI 53545
4
Beds
3
Baths
3,017 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.
1.53 ac
Lot SizeThe size of the land the home sits on, from county records.
1975
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

$480K
$440K low$519K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,496 (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.$437,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$84,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$353,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$487,600

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.Contemporary
CountyROCK
Lot (acres)The size of the land the home sits on, from county records.1.53
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
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(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 · 0.7 mi
H
Milton High SchoolB
High · Grades 9–12 · 5.9 mi
M
Milton Middle SchoolC
Middle · Grades 7–8 · 6.3 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

4144 N River Hills Ct 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 89% of homes in Janesville 53545
  • Costs less per square foot than 80% of homes in Janesville 53545
  • Bigger than 96% of homes in Rock County
  • Has a bigger lot than 94% of homes in Janesville 53545
  • Newer than 80% 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
$149K$747K

This home is worth more than 89% 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$479,628
CheaperTypical $283,865Pricier

Pricier than 89% of homes nearby

Price per ft²$159
CheaperTypical $202Pricier

Pricier than 20% of homes nearby

Living area3,017 ft²
SmallerTypical 1,430 ft²Bigger

Bigger than 95% of homes nearby

Lot size1.53 ac
SmallerTypical 0.23 acBigger

Bigger than 94% of homes nearby

Year built1975
OlderTypical 1958Newer

Newer than 80% of homes nearby

How 4144 N River Hills Ct ranks against every home in each area.
MeasureThis homeJanesville 53545Rock County
Estimated valuepricier than$479,62889% of homes89% of homes
Price per ft²pricier than$15920% of homes32% of homes
Living areabigger than3,017 ft²95% of homes96% of homes
Lot sizebigger than1.53 ac94% of homes89% of homes
Year builtnewer than197580% of homes65% of homes

About 4144 N River Hills Ct

How much is 4144 N River Hills Ct, Janesville, WI worth?

The TopHap Estimate for 4144 N River Hills Ct, Janesville, WI is $479,628 as of Jul 14, 2026. The likely range is $440,392 to $518,864. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4144 N River Hills Ct, Janesville, WI last sell?

4144 N River Hills Ct, Janesville, WI last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 4144 N River Hills Ct, Janesville, WI?

4144 N River Hills Ct, Janesville, WI has 4 bedrooms, 3 bathrooms, 3,017 square feet of living space and a 1.53-acre lot.

When was 4144 N River Hills Ct, Janesville, WI built?

4144 N River Hills Ct, Janesville, WI was built in 1975, making it 51 years old. It is a contemporary home. The building has 1 story.

What schools serve 4144 N River Hills Ct, Janesville, WI?

4144 N River Hills Ct, 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 4144 N River Hills Ct, Janesville, WI compare to other homes in Janesville 53545?

Among the 7,842 homes in Janesville 53545, it is worth more than 89% of them ($479,628 against a typical $283,865), its price per square foot is higher than 20% of them ($159 against a typical $202), it is bigger than 95% of them (3,017 ft² against a typical 1,430 ft²), its lot is bigger than 94% of them (1.53 ac against a typical 0.23 ac) and it is newer than 80% of them (1975 against a typical 1958). Measured against all of Rock County, it is worth more than 89% 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 4144 N River Hills Ct, Janesville, WI?

The 2025 property tax bill for 4144 N River Hills Ct, Janesville, WI was $5,496. The county assessed it at $437,600.

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