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Single Family ResidenceResidential
$874,522
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 97How 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 $850,000 on May 18, 2023

3121 CASTLETON XING

SUN PRAIRIE, WI 53590
0
Baths
1.16 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$875K
$845K low$904K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$850,000 · May 18, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,983 (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.$808,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$102,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$705,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$808,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$972,600

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDane
Lot (acres)The size of the land the home sits on, from county records.1.16
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
Central Heights Middle SchoolB-
Middle · Grades 6–8 · 2.4 mi
E
Token Springs Elementary SchoolA-
Elementary · Grades KG–5 · 2.8 mi
H
Sun Prairie East High SchoolA
High · Grades 9–12 · 5.1 mi

District: Sun Prairie Area School District

Neighborhood · ZIP 53590These 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.70
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.21

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.8%
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.45,977
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.667 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,632
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$119,189
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.34 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

3121 Castleton Xing 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.

  • Among the most valuable homes in Sun Prairie 53590
  • Has a bigger lot than 95% of homes in Sun Prairie 53590

What homes are worth in Sun Prairie 53590

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

This home
$188K$829K

This home is worth more than almost all homes in Sun Prairie 53590.

How it measures up in Sun Prairie 53590

The dot is this home. The mark in the middle is the typical home in Sun Prairie 53590.

Estimated value$874,522
CheaperTypical $426,734Pricier

Pricier than almost all homes nearby

Lot size1.16 ac
SmallerTypical 0.26 acBigger

Bigger than 95% of homes nearby

How 3121 Castleton Xing ranks against every home in each area.
MeasureThis homeSun Prairie 53590Dane County
Estimated valuepricier than$874,522almost all homes95% of homes
Lot sizebigger than1.16 ac95% of homes90% of homes

About 3121 Castleton Xing

How much is 3121 Castleton Xing, Sun Prairie, WI worth?

The TopHap Estimate for 3121 Castleton Xing, Sun Prairie, WI is $874,522 as of Aug 30, 2026. The likely range is $844,751 to $904,293. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3121 Castleton Xing, Sun Prairie, WI last sell?

3121 Castleton Xing, Sun Prairie, WI last sold on May 18, 2023 for $850,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

What schools serve 3121 Castleton Xing, Sun Prairie, WI?

3121 Castleton Xing, Sun Prairie, WI is assigned to Central Heights Middle School (middle), rated B-; Token Springs Elementary School (elementary), rated A-; Sun Prairie East High School (high), rated A. All sit in Sun Prairie Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3121 Castleton Xing, Sun Prairie, WI compare to other homes in Sun Prairie 53590?

Among the 13,562 homes in Sun Prairie 53590, it is worth more than almost all of them ($874,522 against a typical $426,734) and its lot is bigger than 95% of them (1.16 ac against a typical 0.26 ac). Measured against all of Dane County, it is worth more than 95% 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 3121 Castleton Xing, Sun Prairie, WI?

The 2025 property tax bill for 3121 Castleton Xing, Sun Prairie, WI was $11,983. The county assessed it at $808,100.

More homes on Castleton Xing

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Assigned schools

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