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Single Family ResidenceResidential
$255,675$275 / 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 Oct 21, 2026

551 OLLIE ST

COTTAGE GROVE, WI 53527
4
Beds
2 / 1
Baths
930 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.
0.39 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$256K
$234K low$278K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,524 (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.$187,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$71,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$115,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$187,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$266,300

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.Bi-Level
CountyDane
Lot (acres)The size of the land the home sits on, from county records.0.39
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
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

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 · 0.2 mi
M
Glacial Drumlin SchoolC-
Middle · Grades 6–8 · 1.1 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

551 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 96% of homes in Cottage Grove 53527
  • Costs less per square foot than 85% of homes in Cottage Grove 53527
  • Smaller than 94% of homes in Dane County
  • Has a bigger lot than 73% of homes in Dane County
  • Older than 92% 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
$232K$863K

This home is worth more than 4% 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$255,675
CheaperTypical $475,258Pricier

Pricier than 4% of homes nearby

Price per ft²$275
CheaperTypical $336Pricier

Pricier than 15% of homes nearby

Living area930 ft²
SmallerTypical 1,361 ft²Bigger

Bigger than 13% of homes nearby

Lot size0.39 ac
SmallerTypical 0.37 acBigger

Bigger than 52% of homes nearby

Year built1973
OlderTypical 1997Newer

Newer than 8% of homes nearby

How 551 Ollie St ranks against every home in each area.
MeasureThis homeCottage Grove 53527Dane County
Estimated valuepricier than$255,6754% of homes10% of homes
Price per ft²pricier than$27515% of homes64% of homes
Living areabigger than930 ft²13% of homes6% of homes
Lot sizebigger than0.39 ac52% of homes73% of homes
Year builtnewer than19738% of homes47% of homes

About 551 Ollie St

How much is 551 Ollie St, Cottage Grove, WI worth?

The TopHap Estimate for 551 Ollie St, Cottage Grove, WI is $255,675 as of Oct 21, 2026. The likely range is $233,512 to $277,838. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 551 Ollie St, Cottage Grove, WI?

551 Ollie St, Cottage Grove, WI has 4 bedrooms, 2 bathrooms, 930 square feet of living space and a 0.39-acre lot.

When was 551 Ollie St, Cottage Grove, WI built?

551 Ollie St, Cottage Grove, WI was built in 1973, making it 53 years old. It is a bi-level home. The building has 1 story.

What schools serve 551 Ollie St, Cottage Grove, WI?

551 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 551 Ollie St, Cottage Grove, WI compare to other homes in Cottage Grove 53527?

Among the 3,869 homes in Cottage Grove 53527, it is worth more than 4% of them ($255,675 against a typical $475,258), its price per square foot is higher than 15% of them ($275 against a typical $336), it is bigger than 13% of them (930 ft² against a typical 1,361 ft²), its lot is bigger than 52% of them (0.39 ac against a typical 0.37 ac) and it is newer than 8% of them (1973 against a typical 1997). Measured against all of Dane County, it is worth more than 10% 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 551 Ollie St, Cottage Grove, WI?

The 2025 property tax bill for 551 Ollie St, Cottage Grove, WI was $4,524. The county assessed it at $187,000.

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