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Single Family ResidenceResidential
$315,640$208 / 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 84How 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

21 HARMON AVE

BELLEVILLE, WI 53508
3
Beds
2
Baths
1,520 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.
0.27 ac
Lot SizeThe size of the land the home sits on, from county records.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$316K
$266K low$365K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,950 (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.$221,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$53,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$168,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$221,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$331,900

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
CountyDane
Lot (acres)The size of the land the home sits on, from county records.0.27
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
Belleville Elementary SchoolA
Elementary · Grades PK–6 · 0.2 mi
M
Belleville Middle SchoolA-
Middle · Grades 7–8 · 0.3 mi
H
Belleville High SchoolB-
High · Grades 9–12 · 0.3 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

21 Harmon 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 75% of homes in Dane County
  • Has a smaller lot than 67% 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
$120K$805K

This home is worth more than 29% 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$315,640
CheaperTypical $392,647Pricier

Pricier than 29% of homes nearby

Price per ft²$208
CheaperTypical $221Pricier

Pricier than 43% of homes nearby

Living area1,520 ft²
SmallerTypical 1,460 ft²Bigger

Bigger than 58% of homes nearby

Lot size0.27 ac
SmallerTypical 0.42 acBigger

Bigger than 33% of homes nearby

How 21 Harmon Ave ranks against every home in each area.
MeasureThis homeBelleville 53508Dane County
Estimated valuepricier than$315,64029% of homes25% of homes
Price per ft²pricier than$20843% of homes38% of homes
Living areabigger than1,520 ft²58% of homes39% of homes
Lot sizebigger than0.27 ac33% of homes54% of homes

About 21 Harmon Ave

How much is 21 Harmon Ave, Belleville, WI worth?

The TopHap Estimate for 21 Harmon Ave, Belleville, WI is $315,640 as of Aug 30, 2026. The likely range is $266,498 to $364,782. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 21 Harmon Ave, Belleville, WI?

21 Harmon Ave, Belleville, WI has 3 bedrooms, 2 bathrooms, 1,520 square feet of living space and a 0.27-acre lot.

What schools serve 21 Harmon Ave, Belleville, WI?

21 Harmon 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 21 Harmon Ave, Belleville, WI compare to other homes in Belleville 53508?

Among the 2,244 homes in Belleville 53508, it is worth more than 29% of them ($315,640 against a typical $392,647), its price per square foot is higher than 43% of them ($208 against a typical $221), it is bigger than 58% of them (1,520 ft² against a typical 1,460 ft²) and its lot is bigger than 33% of them (0.27 ac against a typical 0.42 ac). Measured against all of Dane County, it is worth more than 25% 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 21 Harmon Ave, Belleville, WI?

The 2025 property tax bill for 21 Harmon Ave, Belleville, WI was $5,950. The county assessed it at $221,500.

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Assigned schools

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