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Single Family ResidenceResidential
$298,189
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 90How 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
Last sold for $285,000 on Jul 18, 2025

30 KARL AVE

BELLEVILLE, WI 53508
0
Baths
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$298K
$268K low$328K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$285,000 · Jul 18, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,851 (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.$172,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$39,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$133,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$172,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$258,500

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.
22
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.
57
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
9
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
CountyDane
Lot (acres)The size of the land the home sits on, from county records.0.14
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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
Belleville Elementary SchoolA
Elementary · Grades PK–6 · 0.9 mi
M
Belleville Middle SchoolA-
Middle · Grades 7–8 · 1.1 mi
H
Belleville High SchoolB-
High · Grades 9–12 · 1.1 mi

District: Belleville School District

Neighborhood · ZIP 53508These 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.133
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.4,786
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.73 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$94,157
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,042
Average tempThe average temperature here across a full year.46°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

30 Karl Ave 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 less than 84% of homes in Dane County
  • Has a smaller lot than 96% of homes in Belleville 53508

What homes are worth in Belleville 53508

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

This home
$112K$815K

This home is worth more than 23% of homes in Belleville 53508.

How it measures up in Belleville 53508

The dot is this home. The mark in the middle is the typical home in Belleville 53508.

Estimated value$298,189
CheaperTypical $395,874Pricier

Pricier than 23% of homes nearby

Lot size0.14 ac
SmallerTypical 0.42 acBigger

Bigger than 4% of homes nearby

How 30 Karl Ave ranks against every home in each area.
MeasureThis homeBelleville 53508Dane County
Estimated valuepricier than$298,18923% of homes16% of homes
Lot sizebigger than0.14 ac4% of homes14% of homes

About 30 Karl Ave

How much is 30 Karl Ave, Belleville, WI worth?

The TopHap Estimate for 30 Karl Ave, Belleville, WI is $298,189 as of Sep 24, 2026. The likely range is $268,312 to $328,066. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 30 Karl Ave, Belleville, WI last sell?

30 Karl Ave, Belleville, WI last sold on Jul 18, 2025 for $285,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

What schools serve 30 Karl Ave, Belleville, WI?

30 Karl Ave, Belleville, WI is assigned to Belleville Elementary School (elementary), rated A; Belleville Middle School (middle), rated A-; Belleville High School (high), rated B-. All sit in Belleville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 30 Karl Ave, Belleville, WI compare to other homes in Belleville 53508?

Among the 2,245 homes in Belleville 53508, it is worth more than 23% of them ($298,189 against a typical $395,874) and its lot is bigger than 4% of them (0.14 ac against a typical 0.42 ac). Measured against all of Dane County, it is worth more than 16% 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 30 Karl Ave, Belleville, WI?

The 2025 property tax bill for 30 Karl Ave, Belleville, WI was $4,851. The county assessed it at $172,500.

More homes on Karl Ave

Closest homes

More homes in Belleville 53508

Assigned schools

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