Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$213,919$105 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

427 UNION AVE

OSHKOSH, WI 54901
4
Beds
2 / 1
Baths
2,030 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.
3,101 ft²
Lot SizeThe size of the land the home sits on, from county records.
1927
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

$214K
$197K low$231K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,121 (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.$173,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$162,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$173,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$177,944

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyWinnebago
Lot (acres)The size of the land the home sits on, from county records.0.07
HeatingThe type of heating system in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached

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

M
Vel Phillips Middle SchoolD-
Middle · Grades 6–8 · 0.7 mi
E
Read Elementary SchoolD-
Elementary · Grades KG–5 · 0.8 mi
H
Oshkosh North High SchoolD
High · Grades 9–12 · 1.6 mi

District: Oshkosh Area School District

Neighborhood · ZIP 54901These 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.76
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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.38,222
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.592 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,941
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$74,529
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.31 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

427 Union 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 76% of homes in Winnebago County
  • Costs less per square foot than 96% of homes in Winnebago County
  • Bigger than 81% of homes in Winnebago County
  • Has a smaller lot than 98% of homes in Oshkosh 54901
  • Older than 69% of homes in Winnebago County

What homes are worth in Oshkosh 54901

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

This home
$123K$750K

This home is worth more than 43% of homes in Oshkosh 54901.

How it measures up in Oshkosh 54901

The dot is this home. The mark in the middle is the typical home in Oshkosh 54901.

Estimated value$213,919
CheaperTypical $227,596Pricier

Pricier than 43% of homes nearby

Price per ft²$105
CheaperTypical $167Pricier

Pricier than 6% of homes nearby

Living area2,030 ft²
SmallerTypical 1,492 ft²Bigger

Bigger than 78% of homes nearby

Lot size3,101 ft²
SmallerTypical 0.17 acBigger

Bigger than 2% of homes nearby

Year built1927
OlderTypical 1926Newer

Newer than 52% of homes nearby

How 427 Union Ave ranks against every home in each area.
MeasureThis homeOshkosh 54901Winnebago County
Estimated valuepricier than$213,91943% of homes24% of homes
Price per ft²pricier than$1056% of homes4% of homes
Living areabigger than2,030 ft²78% of homes81% of homes
Lot sizebigger than3,101 ft²2% of homes2% of homes
Year builtnewer than192752% of homes31% of homes

About 427 Union Ave

How much is 427 Union Ave, Oshkosh, WI worth?

The TopHap Estimate for 427 Union Ave, Oshkosh, WI is $213,919 as of Oct 21, 2026. The likely range is $196,782 to $231,056. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 427 Union Ave, Oshkosh, WI?

427 Union Ave, Oshkosh, WI has 4 bedrooms, 2 bathrooms, 2,030 square feet of living space and a 0.07-acre lot.

When was 427 Union Ave, Oshkosh, WI built?

427 Union Ave, Oshkosh, WI was built in 1927, making it 99 years old. The building has 2 stories.

What schools serve 427 Union Ave, Oshkosh, WI?

427 Union Ave, Oshkosh, WI is assigned to Vel Phillips Middle School (middle), rated D-; Read Elementary School (elementary), rated D-; Oshkosh North High School (high), rated D. All sit in Oshkosh Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 427 Union Ave, Oshkosh, WI compare to other homes in Oshkosh 54901?

Among the 10,856 homes in Oshkosh 54901, it is worth more than 43% of them ($213,919 against a typical $227,596), its price per square foot is higher than 6% of them ($105 against a typical $167), it is bigger than 78% of them (2,030 ft² against a typical 1,492 ft²), its lot is bigger than 2% of them (3,101 ft² against a typical 0.17 ac) and it is newer than 52% of them (1927 against a typical 1926). Measured against all of Winnebago County, it is worth more than 24% 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 427 Union Ave, Oshkosh, WI?

The 2025 property tax bill for 427 Union Ave, Oshkosh, WI was $3,121. The county assessed it at $173,800.

More homes on Union Ave

Closest homes

More homes in Oshkosh 54901

Assigned schools

Explore the area

See this home in context

Open 427 Union Ave 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