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Rural ResidenceResidential
$1,274,810
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 86How 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

4821 W ROCKPORT RD

JANESVILLE, WI 53548
0
Baths
40.01 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$1.3M
$1.1M low$1.5M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,635 (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.$429,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$41,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$387,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$429,100

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.28
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
14
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.
59
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.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
CountyRock
Lot (acres)The size of the land the home sits on, from county records.40.01
HeatingThe type of heating system in the home.None

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.

H
Parker High SchoolD+
High · Grades 9–12 · 1.8 mi
E
Van Buren Elementary SchoolB+
Elementary · Grades KG–5 · 2.9 mi
M
Edison Middle SchoolC
Middle · Grades 6–8 · 3.1 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%

Owner Tools

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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

4821 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.

  • Among the most valuable homes in Janesville 53548
  • Among the largest lots in Janesville 53548

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
$96K$725K

This home is worth more than almost all 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$1,274,810
CheaperTypical $260,910Pricier

Pricier than almost all homes nearby

Lot size40.01 ac
SmallerTypical 0.25 acBigger

Bigger than almost all homes nearby

How 4821 W Rockport Rd ranks against every home in each area.
MeasureThis homeJanesville 53548Rock County
Estimated valuepricier than$1,274,810almost all homesalmost all homes
Lot sizebigger than40.01 acalmost all homesalmost all homes

About 4821 W Rockport Rd

How much is 4821 W Rockport Rd, Janesville, WI worth?

The TopHap Estimate for 4821 W Rockport Rd, Janesville, WI is $1,274,810 as of Aug 30, 2026. The likely range is $1,090,341 to $1,459,279. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

What schools serve 4821 W Rockport Rd, Janesville, WI?

4821 W Rockport Rd, Janesville, WI is assigned to Parker High School (high), rated D+; Van Buren Elementary School (elementary), rated B+; Edison Middle School (middle), rated C. All sit in Janesville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4821 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 almost all of them ($1,274,810 against a typical $260,910) and its lot is bigger than almost all of them (40.01 ac against a typical 0.25 ac). 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 4821 W Rockport Rd, Janesville, WI?

The 2025 property tax bill for 4821 W Rockport Rd, Janesville, WI was $8,635. The county assessed it at $429,100.

More homes on W Rockport Rd

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More homes in Janesville 53548

Assigned schools

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