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Single Family ResidenceResidential
$250,818$224 / 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 Sep 24, 2026

4820 W ROCKPORT RD

JANESVILLE, WI 53548
3
Beds
1
Baths
1,120 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.
0.62 ac
Lot SizeThe size of the land the home sits on, from county records.
1966
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

$251K
$232K low$269K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,547 (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.$195,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$24,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$171,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$195,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$217,900

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.0.62
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

H
Parker High SchoolD-
High · Grades 9–12 · 1.9 mi
M
Franklin Middle SchoolD
Middle · Grades 6–8 · 2.5 mi
E
Madison Elementary SchoolD+
Elementary · Grades KG–5 · 2.5 mi

District: Janesville School District

Neighborhood · ZIP 53548These 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.92
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
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.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.20,818
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.284 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,018
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,665
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%

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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

4820 W Rockport Rd 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.

  • Costs more per square foot than 71% of homes in Rock County
  • Smaller than 78% of homes in Janesville 53548
  • Has a bigger lot than 79% of homes in Rock County

What homes are worth in Janesville 53548

Each bar is how many homes fall in that price range. The marker is this home.

This home
$103K$790K

This home is worth more than 41% of homes in Janesville 53548.

How it measures up in Janesville 53548

The dot is this home. The mark in the middle is the typical home in Janesville 53548.

Estimated value$250,818
CheaperTypical $281,107Pricier

Pricier than 41% of homes nearby

Price per ft²$224
CheaperTypical $192Pricier

Pricier than 70% of homes nearby

Living area1,120 ft²
SmallerTypical 1,450 ft²Bigger

Bigger than 22% of homes nearby

Lot size0.62 ac
SmallerTypical 0.24 acBigger

Bigger than 78% of homes nearby

Year built1966
OlderTypical 1963Newer

Newer than 54% of homes nearby

How 4820 W Rockport Rd ranks against every home in each area.
MeasureThis homeJanesville 53548Rock County
Estimated valuepricier than$250,81841% of homes38% of homes
Price per ft²pricier than$22470% of homes71% of homes
Living areabigger than1,120 ft²22% of homes27% of homes
Lot sizebigger than0.62 ac78% of homes79% of homes
Year builtnewer than196654% of homes56% of homes

About 4820 W Rockport Rd

How much is 4820 W Rockport Rd, Janesville, WI worth?

The TopHap Estimate for 4820 W Rockport Rd, Janesville, WI is $250,818 as of Sep 24, 2026. The likely range is $232,214 to $269,422. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 4820 W Rockport Rd, Janesville, WI?

4820 W Rockport Rd, Janesville, WI has 3 bedrooms, 1 bathrooms, 1,120 square feet of living space and a 0.62-acre lot.

When was 4820 W Rockport Rd, Janesville, WI built?

4820 W Rockport Rd, Janesville, WI was built in 1966, making it 60 years old. It is a ranch home. The building has 1 story.

What schools serve 4820 W Rockport Rd, Janesville, WI?

4820 W Rockport Rd, Janesville, WI is assigned to Parker High School (high), rated D-; Franklin Middle School (middle), rated D; Madison Elementary School (elementary), rated D+. All sit in Janesville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4820 W Rockport Rd, Janesville, WI compare to other homes in Janesville 53548?

Among the 6,715 homes in Janesville 53548, it is worth more than 41% of them ($250,818 against a typical $281,107), its price per square foot is higher than 70% of them ($224 against a typical $192), it is bigger than 22% of them (1,120 ft² against a typical 1,450 ft²), its lot is bigger than 78% of them (0.62 ac against a typical 0.24 ac) and it is newer than 54% of them (1966 against a typical 1963). Measured against all of Rock County, it is worth more than 38% 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 4820 W Rockport Rd, Janesville, WI?

The 2025 property tax bill for 4820 W Rockport Rd, Janesville, WI was $2,547. The county assessed it at $195,500.

More homes on W Rockport Rd

Closest homes

More homes in Janesville 53548

Assigned schools

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