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Single Family ResidenceResidential
$337,631
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 88How 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 $178,000 on May 28, 2003

103 MALLARD CT

SULLIVAN, WI 53178
0
Baths
0.37 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$338K
$297K low$378K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$178,000 · May 28, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,577 (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.$294,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$62,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$231,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$294,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$320,800

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyJefferson
Lot (acres)The size of the land the home sits on, from county records.0.37
HeatingThe type of heating system in the home.None

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

E
Sullivan Elementary SchoolB-
Elementary · Grades PK–5 · 0.4 mi
H
Jefferson High SchoolD
High · Grades 9–12 · 12.1 mi
M
Jefferson Middle SchoolB
Middle · Grades 6–8 · 12.2 mi

District: Jefferson School District

Neighborhood · ZIP 53178These 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.116
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.25

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.96%
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.5.6%
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.2,546
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.76 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$93,270
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,618
Average tempThe average temperature here across a full year.47°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

103 Mallard Ct 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.

  • Has a smaller lot than 77% of homes in Sullivan 53178

What homes are worth in Sullivan 53178

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

This home
$100K$815K

This home is worth more than 41% of homes in Sullivan 53178.

How it measures up in Sullivan 53178

The dot is this home. The mark in the middle is the typical home in Sullivan 53178.

Estimated value$337,631
CheaperTypical $377,081Pricier

Pricier than 41% of homes nearby

Lot size0.37 ac
SmallerTypical 1.04 acBigger

Bigger than 23% of homes nearby

How 103 Mallard Ct ranks against every home in each area.
MeasureThis homeSullivan 53178Jefferson County
Estimated valuepricier than$337,63141% of homes48% of homes
Lot sizebigger than0.37 ac23% of homes55% of homes

About 103 Mallard Ct

How much is 103 Mallard Ct, Sullivan, WI worth?

The TopHap Estimate for 103 Mallard Ct, Sullivan, WI is $337,631 as of Aug 30, 2026. The likely range is $296,957 to $378,305. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 103 Mallard Ct, Sullivan, WI last sell?

103 Mallard Ct, Sullivan, WI last sold on May 28, 2003 for $178,000, according to the county's recorded deed.

What schools serve 103 Mallard Ct, Sullivan, WI?

103 Mallard Ct, Sullivan, WI is assigned to Sullivan Elementary School (elementary), rated B-; Jefferson High School (high), rated D; Jefferson Middle School (middle), rated B. All sit in Jefferson School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 103 Mallard Ct, Sullivan, WI compare to other homes in Sullivan 53178?

Among the 923 homes in Sullivan 53178, it is worth more than 41% of them ($337,631 against a typical $377,081) and its lot is bigger than 23% of them (0.37 ac against a typical 1.04 ac). Measured against all of Jefferson 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 103 Mallard Ct, Sullivan, WI?

The 2025 property tax bill for 103 Mallard Ct, Sullivan, WI was $5,577. The county assessed it at $294,700.

More homes on Mallard Ct

Closest homes

More homes in Sullivan 53178

Assigned schools

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