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Single Family ResidenceResidential
$126,442$73 / 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 75How 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

100 W UNION ST

AFTON, IA 50830
4
Beds
2 / 1
Baths
1,724 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$126K
$95K low$157K high

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$343,070 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$10,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$332,270
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$10,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$343,070

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyUnion
Lot (acres)The size of the land the home sits on, from county records.0.50
ConstructionThe main material the home's frame and walls are built from.Brick
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Brick (Unspecified)
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.None
FireplaceWhether the home has a fireplace, and what kind.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 30 ft²

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

E
East Union Elementary SchoolA+
Elementary · Grades PK–5 · 1.1 mi
M
East Union Middle-High SchoolB+
Middle · Grades 6–12 · 1.1 mi

District: East Union Community School District

Neighborhood · ZIP 50830These 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.103
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.116
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.13

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.90%
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.9.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.1,713
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.15 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$75,554
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,228
Average tempThe average temperature here across a full year.50°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.59%

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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

100 W 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.

  • Costs less per square foot than 76% of homes in Union County
  • Bigger than 78% of homes in Union County
  • Has a bigger lot than 65% of homes in Union County

What homes are worth in Afton 50830

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

This home
$29K$552K

This home is worth more than 43% of homes in Afton 50830.

How it measures up in Afton 50830

The dot is this home. The mark in the middle is the typical home in Afton 50830.

Estimated value$126,442
CheaperTypical $140,678Pricier

Pricier than 43% of homes nearby

Price per ft²$73
CheaperTypical $104Pricier

Pricier than 26% of homes nearby

Living area1,724 ft²
SmallerTypical 1,369 ft²Bigger

Bigger than 75% of homes nearby

Lot size0.5 ac
SmallerTypical 1.06 acBigger

Bigger than 42% of homes nearby

Year built1920
OlderTypical 1959Newer

Newer than 38% of homes nearby

How 100 W Union St ranks against every home in each area.
MeasureThis homeAfton 50830Union County
Estimated valuepricier than$126,44243% of homes46% of homes
Price per ft²pricier than$7326% of homes24% of homes
Living areabigger than1,724 ft²75% of homes78% of homes
Lot sizebigger than0.5 ac42% of homes65% of homes
Year builtnewer than192038% of homes41% of homes

About 100 W Union St

How much is 100 W Union St, Afton, IA worth?

The TopHap Estimate for 100 W Union St, Afton, IA is $126,442 as of Aug 30, 2026. The likely range is $95,452 to $157,432. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 100 W Union St, Afton, IA?

100 W Union St, Afton, IA has 4 bedrooms, 2 bathrooms, 1,724 square feet of living space and a 0.50-acre lot.

When was 100 W Union St, Afton, IA built?

100 W Union St, Afton, IA was built in 1920, making it 106 years old. The building has 2 stories.

What schools serve 100 W Union St, Afton, IA?

100 W Union St, Afton, IA is assigned to East Union Elementary School (elementary), rated A+; East Union Middle-High School (middle), rated B+. All sit in East Union Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 100 W Union St, Afton, IA compare to other homes in Afton 50830?

Among the 693 homes in Afton 50830, it is worth more than 43% of them ($126,442 against a typical $140,678), its price per square foot is higher than 26% of them ($73 against a typical $104), it is bigger than 75% of them (1,724 ft² against a typical 1,369 ft²), its lot is bigger than 42% of them (0.5 ac against a typical 1.06 ac) and it is newer than 38% of them (1920 against a typical 1959). Measured against all of Union County, it is worth more than 46% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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