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Single Family ResidentialResidential
$350,697
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 86How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $320,000 on Dec 23, 2024

503 MARY LN

FAIRWATER, WI 53931
0
Baths
0.51 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$351K
$301K low$401K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$320,000 · Dec 23, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,571 (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.$177,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$20,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$157,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$177,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$268,087

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountyFond du Lac
Lot (acres)The size of the land the home sits on, from county records.0.51
HeatingThe type of heating system in the home.None

Transaction History(1)

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
Markesan Middle SchoolB-
Middle · Grades 6–8 · 6.3 mi
H
Markesan High SchoolB+
High · Grades 9–12 · 6.3 mi
E
Markesan Elementary SchoolC-
Elementary · Grades PK–5 · 6.7 mi

District: Markesan School District

Neighborhood · ZIP 53931These 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.111
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.75
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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.25
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.31 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$93,396
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$95,969
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.32 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

503 Mary Ln 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 Fairwater 53931

What homes are worth in Fairwater 53931

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

This home
$73K$351K

This home is worth more than almost all homes in Fairwater 53931.

How it measures up in Fairwater 53931

The dot is this home. The mark in the middle is the typical home in Fairwater 53931.

Estimated value$350,697
CheaperTypical $179,198Pricier

Pricier than almost all homes nearby

Lot size0.51 ac
SmallerTypical 0.5 acBigger

Bigger than 51% of homes nearby

How 503 Mary Ln ranks against every home in each area.
MeasureThis homeFairwater 53931Fond du Lac County
Estimated valuepricier than$350,697almost all homes67% of homes
Lot sizebigger than0.51 ac51% of homes61% of homes

About 503 Mary Ln

How much is 503 Mary Ln, Fairwater, WI worth?

The TopHap Estimate for 503 Mary Ln, Fairwater, WI is $350,697 as of Sep 24, 2026. The likely range is $300,500 to $400,894. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 503 Mary Ln, Fairwater, WI last sell?

503 Mary Ln, Fairwater, WI last sold on Dec 23, 2024 for $320,000, according to the county's recorded deed.

What schools serve 503 Mary Ln, Fairwater, WI?

503 Mary Ln, Fairwater, WI is assigned to Markesan Middle School (middle), rated B-; Markesan High School (high), rated B+; Markesan Elementary School (elementary), rated C-. All sit in Markesan School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 503 Mary Ln, Fairwater, WI compare to other homes in Fairwater 53931?

Among the 147 homes in Fairwater 53931, it is worth more than almost all of them ($350,697 against a typical $179,198) and its lot is bigger than 51% of them (0.51 ac against a typical 0.5 ac). Measured against all of Fond du Lac County, it is worth more than 67% 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 503 Mary Ln, Fairwater, WI?

The 2025 property tax bill for 503 Mary Ln, Fairwater, WI was $3,571. The county assessed it at $177,700.

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Assigned schools

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