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Single Family ResidenceResidential
$312,685$320 / 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 92How 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 $227,000 on Aug 17, 2016

454 OLLIE ST

COTTAGE GROVE, WI 53527
3
Beds
2
Baths
976 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.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$313K
$287K low$338K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$227,000 · Aug 17, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,334 (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.$219,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$77,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$141,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$219,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$312,200

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Split Level
CountyDane
Lot (acres)The size of the land the home sits on, from county records.0.28
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Gazebo

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.

E
Cottage Grove SchoolC+
Elementary · Grades 1–2 · 0.1 mi
M
Glacial Drumlin SchoolC-
Middle · Grades 6–8 · 1.2 mi
H
Monona Grove High SchoolC
High · Grades 9–12 · 6.3 mi

District: Monona Grove School District

Neighborhood · ZIP 53527These 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.31
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.24

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.8%
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.11,163
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.315 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$110,898
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$129,746
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

454 Ollie 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 90% of homes in Cottage Grove 53527
  • Costs more per square foot than 78% of homes in Dane County
  • Smaller than 93% of homes in Dane County
  • Has a smaller lot than 72% of homes in Cottage Grove 53527
  • Older than 94% of homes in Cottage Grove 53527

What homes are worth in Cottage Grove 53527

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

This home
$243K$907K

This home is worth more than 10% of homes in Cottage Grove 53527.

How it measures up in Cottage Grove 53527

The dot is this home. The mark in the middle is the typical home in Cottage Grove 53527.

Estimated value$312,685
CheaperTypical $484,941Pricier

Pricier than 10% of homes nearby

Price per ft²$320
CheaperTypical $345Pricier

Pricier than 36% of homes nearby

Living area976 ft²
SmallerTypical 1,360 ft²Bigger

Bigger than 16% of homes nearby

Lot size0.28 ac
SmallerTypical 0.37 acBigger

Bigger than 28% of homes nearby

Year built1970
OlderTypical 1997Newer

Newer than 6% of homes nearby

How 454 Ollie St ranks against every home in each area.
MeasureThis homeCottage Grove 53527Dane County
Estimated valuepricier than$312,68510% of homes18% of homes
Price per ft²pricier than$32036% of homes78% of homes
Living areabigger than976 ft²16% of homes7% of homes
Lot sizebigger than0.28 ac28% of homes57% of homes
Year builtnewer than19706% of homes44% of homes

About 454 Ollie St

How much is 454 Ollie St, Cottage Grove, WI worth?

The TopHap Estimate for 454 Ollie St, Cottage Grove, WI is $312,685 as of Sep 24, 2026. The likely range is $287,167 to $338,203. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 454 Ollie St, Cottage Grove, WI last sell?

454 Ollie St, Cottage Grove, WI last sold on Aug 17, 2016 for $227,000, according to the county's recorded deed.

How big is 454 Ollie St, Cottage Grove, WI?

454 Ollie St, Cottage Grove, WI has 3 bedrooms, 2 bathrooms, 976 square feet of living space and a 0.28-acre lot.

When was 454 Ollie St, Cottage Grove, WI built?

454 Ollie St, Cottage Grove, WI was built in 1970, making it 56 years old. It is a split level home. The building has 2 stories.

What schools serve 454 Ollie St, Cottage Grove, WI?

454 Ollie St, Cottage Grove, WI is assigned to Cottage Grove School (elementary), rated C+; Glacial Drumlin School (middle), rated C-; Monona Grove High School (high), rated C. All sit in Monona Grove School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 454 Ollie St, Cottage Grove, WI compare to other homes in Cottage Grove 53527?

Among the 3,884 homes in Cottage Grove 53527, it is worth more than 10% of them ($312,685 against a typical $484,941), its price per square foot is higher than 36% of them ($320 against a typical $345), it is bigger than 16% of them (976 ft² against a typical 1,360 ft²), its lot is bigger than 28% of them (0.28 ac against a typical 0.37 ac) and it is newer than 6% of them (1970 against a typical 1997). Measured against all of Dane County, it is worth more than 18% 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 454 Ollie St, Cottage Grove, WI?

The 2025 property tax bill for 454 Ollie St, Cottage Grove, WI was $5,334. The county assessed it at $219,200.

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