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Single Family ResidenceResidential
$302,252$157 / 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 89How 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

521 N UNION ST

APPLETON, WI 54911
3
Beds
1.5
Baths
1,920 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.
0.12 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.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$302K
$270K low$335K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,842 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$265,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$23,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$241,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$300,200

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyOUTAGAMIE
Lot (acres)The size of the land the home sits on, from county records.0.12
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
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

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
Edison Elementary SchoolC+
Elementary · Grades KG–5 · 0.2 mi
M
Kaleidoscope AcademyC
Middle · Grades 6–8 · 0.6 mi
H
Appleton North High SchoolB
High · Grades 9–12 · 3.5 mi

District: Appleton Area School District

Neighborhood · ZIP 54911These 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.118
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.70
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.15

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.5%
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.28,151
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,217 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,141
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,139
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.30 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

521 N 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 more than 77% of homes in Lawrence
  • Costs less per square foot than 75% of homes in Outagamie County
  • Bigger than 73% of homes in Outagamie County
  • Has a smaller lot than 97% of homes in Outagamie County
  • Older than 87% of homes in Outagamie County

What homes are worth in Appleton 54911

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

This home
$149K$504K

This home is worth more than 70% of homes in Appleton 54911.

How it measures up in Appleton 54911

The dot is this home. The mark in the middle is the typical home in Appleton 54911.

Estimated value$302,252
CheaperTypical $262,399Pricier

Pricier than 70% of homes nearby

Price per ft²$157
CheaperTypical $169Pricier

Pricier than 40% of homes nearby

Living area1,920 ft²
SmallerTypical 1,608 ft²Bigger

Bigger than 71% of homes nearby

Lot size0.12 ac
SmallerTypical 0.18 acBigger

Bigger than 12% of homes nearby

Year built1920
OlderTypical 1951Newer

Newer than 25% of homes nearby

How 521 N Union St ranks against every home in each area.
MeasureThis homeLawrenceAppleton 54911Outagamie County
Estimated valuepricier than$302,25277% of homes70% of homes48% of homes
Price per ft²pricier than$15765% of homes40% of homes25% of homes
Living areabigger than1,920 ft²60% of homes71% of homes73% of homes
Lot sizebigger than0.12 ac23% of homes12% of homes3% of homes
Year builtnewer than192077% of homes25% of homes13% of homes

About 521 N Union St

How much is 521 N Union St, Appleton, WI worth?

The TopHap Estimate for 521 N Union St, Appleton, WI is $302,252 as of Aug 30, 2026. The likely range is $269,928 to $334,576. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 N Union St, Appleton, WI last sell?

521 N Union St, Appleton, WI last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 521 N Union St, Appleton, WI?

521 N Union St, Appleton, WI has 3 bedrooms, 1.5 bathrooms, 1,920 square feet of living space and a 0.12-acre lot.

When was 521 N Union St, Appleton, WI built?

521 N Union St, Appleton, WI was built in 1920, making it 106 years old. The building has 2 stories.

What schools serve 521 N Union St, Appleton, WI?

521 N Union St, Appleton, WI is assigned to Edison Elementary School (elementary), rated C+; Kaleidoscope Academy (middle), rated C; Appleton North High School (high), rated B. All sit in Appleton Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 N Union St, Appleton, WI compare to other homes in Appleton 54911?

Among the 8,141 homes in Appleton 54911, it is worth more than 70% of them ($302,252 against a typical $262,399), its price per square foot is higher than 40% of them ($157 against a typical $169), it is bigger than 71% of them (1,920 ft² against a typical 1,608 ft²), its lot is bigger than 12% of them (0.12 ac against a typical 0.18 ac) and it is newer than 25% of them (1920 against a typical 1951). Measured against all of Outagamie County, it is worth more than 48% 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 521 N Union St, Appleton, WI?

The 2024 property tax bill for 521 N Union St, Appleton, WI was $3,842. The county assessed it at $265,100.

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