Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$314,837$206 / 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 Aug 30, 2026

124 UNION ST

SUN PRAIRIE, WI 53590
3
Beds
2
Baths
1,532 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.
0.38 ac
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$315K
$292K low$338K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,224 (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.$267,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$72,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$194,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$267,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$302,900

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.0.38
HeatingThe type of heating system in the home.Hot Water
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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 · 60 ft²

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

E
Northside Elementary SchoolD+
Elementary · Grades PK–5 · 0.7 mi
H
Sun Prairie East High SchoolA
High · Grades 9–12 · 0.9 mi
M
Prairie View Middle SchoolD+
Middle · Grades 6–8 · 1.9 mi

District: Sun Prairie Area School District

Neighborhood · ZIP 53590These 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.70
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 100.21

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.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.8%
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.45,977
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.667 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,632
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$119,189
Average tempThe average temperature here across a full year.46°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%

Owner Tools

Do you own this home?
Claim this home

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

124 Union St 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 Sun Prairie 53590
  • Costs less per square foot than 79% of homes in Sun Prairie 53590
  • Has a bigger lot than 73% of homes in Sun Prairie 53590
  • Older than 97% of homes in Sun Prairie 53590

What homes are worth in Sun Prairie 53590

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

This home
$192K$849K

This home is worth more than 16% of homes in Sun Prairie 53590.

How it measures up in Sun Prairie 53590

The dot is this home. The mark in the middle is the typical home in Sun Prairie 53590.

Estimated value$314,837
CheaperTypical $428,248Pricier

Pricier than 16% of homes nearby

Price per ft²$206
CheaperTypical $253Pricier

Pricier than 21% of homes nearby

Living area1,532 ft²
SmallerTypical 1,502 ft²Bigger

Bigger than 53% of homes nearby

Lot size0.38 ac
SmallerTypical 0.26 acBigger

Bigger than 73% of homes nearby

Year built1910
OlderTypical 1995Newer

Newer than 3% of homes nearby

How 124 Union St ranks against every home in each area.
MeasureThis homeSun Prairie 53590Dane County
Estimated valuepricier than$314,83716% of homes25% of homes
Price per ft²pricier than$20621% of homes36% of homes
Living areabigger than1,532 ft²53% of homes40% of homes
Lot sizebigger than0.38 ac73% of homes73% of homes
Year builtnewer than19103% of homes5% of homes

About 124 Union St

How much is 124 Union St, Sun Prairie, WI worth?

The TopHap Estimate for 124 Union St, Sun Prairie, WI is $314,837 as of Aug 30, 2026. The likely range is $291,697 to $337,977. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 124 Union St, Sun Prairie, WI?

124 Union St, Sun Prairie, WI has 3 bedrooms, 2 bathrooms, 1,532 square feet of living space and a 0.38-acre lot.

When was 124 Union St, Sun Prairie, WI built?

124 Union St, Sun Prairie, WI was built in 1910, making it 116 years old. The building has 2 stories.

What schools serve 124 Union St, Sun Prairie, WI?

124 Union St, Sun Prairie, WI is assigned to Northside Elementary School (elementary), rated D+; Sun Prairie East High School (high), rated A; Prairie View Middle School (middle), rated D+. All sit in Sun Prairie Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 124 Union St, Sun Prairie, WI compare to other homes in Sun Prairie 53590?

Among the 13,563 homes in Sun Prairie 53590, it is worth more than 16% of them ($314,837 against a typical $428,248), its price per square foot is higher than 21% of them ($206 against a typical $253), it is bigger than 53% of them (1,532 ft² against a typical 1,502 ft²), its lot is bigger than 73% of them (0.38 ac against a typical 0.26 ac) and it is newer than 3% of them (1910 against a typical 1995). 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 124 Union St, Sun Prairie, WI?

The 2025 property tax bill for 124 Union St, Sun Prairie, WI was $5,224. The county assessed it at $267,100.

More homes on Union St

Closest homes

More homes in Sun Prairie 53590

Assigned schools

Explore the area

See this home in context

Open 124 Union St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map