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Single Family ResidentialResidential
$243,233
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 87How 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
Last sold for $95,000 on Aug 28, 2015

817 21ST AVE

MONROE, WI 53566
0
Baths
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$243K
$211K low$275K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$95,000 · Aug 28, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,036 (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.$237,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$13,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$224,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$216,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$239,825

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountyGreen
Lot (acres)The size of the land the home sits on, from county records.0.12
HeatingThe type of heating system in the home.None

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
Monroe Middle SchoolB
Middle · Grades 6–8 · 0.4 mi
E
Northside Elementary SchoolA
Elementary · Grades PK–5 · 0.6 mi
H
Monroe High SchoolD
High · Grades 9–12 · 1.2 mi

District: Monroe School District

Neighborhood · ZIP 53566These 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.127
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.26

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.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.1%
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.15,088
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.96 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,741
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$87,165
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.36 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

817 21st 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 70% of homes in Green County
  • Has a smaller lot than 97% of homes in Green County

What homes are worth in Monroe 53566

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

This home
$110K$631K

This home is worth more than 41% of homes in Monroe 53566.

How it measures up in Monroe 53566

The dot is this home. The mark in the middle is the typical home in Monroe 53566.

Estimated value$243,233
CheaperTypical $263,662Pricier

Pricier than 41% of homes nearby

Lot size0.12 ac
SmallerTypical 0.24 acBigger

Bigger than 6% of homes nearby

How 817 21st Ave ranks against every home in each area.
MeasureThis homeMonroe 53566Green County
Estimated valuepricier than$243,23341% of homes30% of homes
Lot sizebigger than0.12 ac6% of homes3% of homes

About 817 21st Ave

How much is 817 21st Ave, Monroe, WI worth?

The TopHap Estimate for 817 21st Ave, Monroe, WI is $243,233 as of Aug 30, 2026. The likely range is $211,120 to $275,346. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 817 21st Ave, Monroe, WI last sell?

817 21st Ave, Monroe, WI last sold on Aug 28, 2015 for $95,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

What schools serve 817 21st Ave, Monroe, WI?

817 21st Ave, Monroe, WI is assigned to Monroe Middle School (middle), rated B; Northside Elementary School (elementary), rated A; Monroe High School (high), rated D. All sit in Monroe School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 817 21st Ave, Monroe, WI compare to other homes in Monroe 53566?

Among the 4,982 homes in Monroe 53566, it is worth more than 41% of them ($243,233 against a typical $263,662) and its lot is bigger than 6% of them (0.12 ac against a typical 0.24 ac). Measured against all of Green County, it is worth more than 30% 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 817 21st Ave, Monroe, WI?

The 2025 property tax bill for 817 21st Ave, Monroe, WI was $4,036. The county assessed it at $237,900.

More homes on 21st Ave

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More homes in Monroe 53566

Assigned schools

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