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Single Family ResidenceResidential
$198,144$138 / ft²
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 91How 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 $85,800 on Apr 22, 2021

51 SIBLEY ST

FOND DU LAC, WI 54935
4
Beds
1
Baths
1,440 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$198K
$180K low$216K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$85,800 · Apr 22, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,293 (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.$203,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$16,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$186,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$119,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$212,001

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.12 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.11%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

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
CountyFond du Lac
Lot (acres)The size of the land the home sits on, from county records.0.18
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Raised (Unspecified)
HeatingThe type of heating system in the home.None

Transaction History(3)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(1)

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

E
Parkside Elementary SchoolD
Elementary · Grades PK–5 · 0.8 mi
M
Sabish Middle SchoolC+
Middle · Grades 6–8 · 1.3 mi
H
Fond Du Lac High SchoolD
High · Grades 9–12 · 1.6 mi

District: Fond Du Lac School District

Neighborhood · ZIP 54935These 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.112
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 100.22

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.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.41,617
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,747 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$61,663
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$73,827
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.31 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

51 Sibley 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 less than 74% of homes in Fond du Lac County
  • Costs less per square foot than 73% of homes in Fond du Lac County
  • Has a smaller lot than 78% of homes in Fond du Lac County
  • Older than 84% of homes in Fond du Lac County

What homes are worth in Fond Du Lac 54935

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

This home
$98K$587K

This home is worth more than 37% of homes in Fond Du Lac 54935.

How it measures up in Fond Du Lac 54935

The dot is this home. The mark in the middle is the typical home in Fond Du Lac 54935.

Estimated value$198,144
CheaperTypical $226,417Pricier

Pricier than 37% of homes nearby

Price per ft²$138
CheaperTypical $173Pricier

Pricier than 30% of homes nearby

Living area1,440 ft²
SmallerTypical 1,400 ft²Bigger

Bigger than 54% of homes nearby

Lot size0.18 ac
SmallerTypical 0.19 acBigger

Bigger than 45% of homes nearby

Year built1900
OlderTypical 1951Newer

Newer than 17% of homes nearby

How 51 Sibley St ranks against every home in each area.
MeasureThis homeFond Du Lac 54935Fond du Lac County
Estimated valuepricier than$198,14437% of homes26% of homes
Price per ft²pricier than$13830% of homes27% of homes
Living areabigger than1,440 ft²54% of homes50% of homes
Lot sizebigger than0.18 ac45% of homes22% of homes
Year builtnewer than190017% of homes16% of homes

About 51 Sibley St

How much is 51 Sibley St, Fond Du Lac, WI worth?

The TopHap Estimate for 51 Sibley St, Fond Du Lac, WI is $198,144 as of Sep 24, 2026. The likely range is $179,790 to $216,498. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 51 Sibley St, Fond Du Lac, WI last sell?

51 Sibley St, Fond Du Lac, WI last sold on Apr 22, 2021 for $85,800, according to the county's recorded deed.

How big is 51 Sibley St, Fond Du Lac, WI?

51 Sibley St, Fond Du Lac, WI has 4 bedrooms, 1 bathrooms, 1,440 square feet of living space and a 0.18-acre lot.

When was 51 Sibley St, Fond Du Lac, WI built?

51 Sibley St, Fond Du Lac, WI was built in 1900, making it 126 years old.

What schools serve 51 Sibley St, Fond Du Lac, WI?

51 Sibley St, Fond Du Lac, WI is assigned to Parkside Elementary School (elementary), rated D; Sabish Middle School (middle), rated C+; Fond Du Lac High School (high), rated D. All sit in Fond Du Lac School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 51 Sibley St, Fond Du Lac, WI compare to other homes in Fond Du Lac 54935?

Among the 13,798 homes in Fond Du Lac 54935, it is worth more than 37% of them ($198,144 against a typical $226,417), its price per square foot is higher than 30% of them ($138 against a typical $173), it is bigger than 54% of them (1,440 ft² against a typical 1,400 ft²), its lot is bigger than 45% of them (0.18 ac against a typical 0.19 ac) and it is newer than 17% of them (1900 against a typical 1951). Measured against all of Fond du Lac County, it is worth more than 26% 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 51 Sibley St, Fond Du Lac, WI?

The 2025 property tax bill for 51 Sibley St, Fond Du Lac, WI was $3,293. The county assessed it at $203,200.

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