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Single Family ResidenceResidential
$334,970
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 Oct 21, 2026
Last sold for $145,000 on Sep 2, 2011

1005 UNION ST

PLATTEVILLE, WI 53818
0
Baths

Valuation

$335K
$299K low$371K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$145,000 · Sep 2, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,948 (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.$326,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$35,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$291,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$326,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$341,500

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.40
40
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
32
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
67
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
58
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
5
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyGrant

Transaction History(2)

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.

M
Platteville Middle SchoolA-
Middle · Grades 4–8 · 0.8 mi
E
Neal Wilkins Early Learning Center
Elementary · Grades EE–1 · 1.2 mi
H
Platteville High SchoolA
High · Grades 9–12 · 1.4 mi

District: Platteville School District

Neighborhood · ZIP 53818These 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.81
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.19

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.17%
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.15,533
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.101 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$60,639
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$79,860
Average tempThe average temperature here across a full year.47°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

1005 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 83% of homes in Grant County

What homes are worth in Platteville 53818

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

This home
$85K$593K

This home is worth more than 75% of homes in Platteville 53818.

How it measures up in Platteville 53818

The dot is this home. The mark in the middle is the typical home in Platteville 53818.

Estimated value$334,970
CheaperTypical $240,785Pricier

Pricier than 75% of homes nearby

How 1005 Union St ranks against every home in each area.
MeasureThis homePlatteville 53818Grant County
Estimated valuepricier than$334,97075% of homes83% of homes

About 1005 Union St

How much is 1005 Union St, Platteville, WI worth?

The TopHap Estimate for 1005 Union St, Platteville, WI is $334,970 as of Oct 21, 2026. The likely range is $298,705 to $371,235. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1005 Union St, Platteville, WI last sell?

1005 Union St, Platteville, WI last sold on Sep 2, 2011 for $145,000, according to the county's recorded deed.

What schools serve 1005 Union St, Platteville, WI?

1005 Union St, Platteville, WI is assigned to Platteville Middle School (middle), rated A-; Neal Wilkins Early Learning Center (elementary); Platteville High School (high), rated A. All sit in Platteville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

What are the property taxes on 1005 Union St, Platteville, WI?

The 2025 property tax bill for 1005 Union St, Platteville, WI was $4,948. The county assessed it at $326,100.

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Assigned schools

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