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Single Family ResidenceResidential
$225,778$149 / 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 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 $110,000 on Jul 30, 2012

509 GROVE ST

DECORAH, IA 52101
3
Beds
2.5
Baths
1,514 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.
1908
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
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

$226K
$200K low$252K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$110,000 · Jul 30, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,778 (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.$218,440 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$42,310
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$176,130
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$192,570
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$218,440

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyWINNESHIEK
Lot (acres)The size of the land the home sits on, from county records.0.28
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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.Porch · 60 ft²

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
Decorah Middle SchoolA
Middle · Grades 5–8 · 0.3 mi
E
John Cline Elementary School
Elementary · Grades KG–2 · 0.6 mi
H
Decorah High SchoolA
High · Grades 9–12 · 0.6 mi

District: Decorah Community School District

Neighborhood · ZIP 52101These 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.97
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 100.16

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.5%
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.13,187
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.42 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$73,457
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$94,291
Average tempThe average temperature here across a full year.45°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.61%

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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

509 Grove 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.

  • Costs less per square foot than 65% of homes in Decorah 52101
  • Has a smaller lot than 70% of homes in Winneshiek County
  • Older than 76% of homes in Decorah 52101

What homes are worth in Decorah 52101

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

This home
$74K$682K

This home is worth more than 38% of homes in Decorah 52101.

How it measures up in Decorah 52101

The dot is this home. The mark in the middle is the typical home in Decorah 52101.

Estimated value$225,778
CheaperTypical $263,445Pricier

Pricier than 38% of homes nearby

Price per ft²$149
CheaperTypical $179Pricier

Pricier than 35% of homes nearby

Living area1,514 ft²
SmallerTypical 1,523 ft²Bigger

Bigger than 50% of homes nearby

Lot size0.28 ac
SmallerTypical 0.48 acBigger

Bigger than 34% of homes nearby

Year built1908
OlderTypical 1969Newer

Newer than 24% of homes nearby

How 509 Grove St ranks against every home in each area.
MeasureThis homeDecorah 52101Winneshiek County
Estimated valuepricier than$225,77838% of homes50% of homes
Price per ft²pricier than$14935% of homes50% of homes
Living areabigger than1,514 ft²50% of homes47% of homes
Lot sizebigger than0.28 ac34% of homes30% of homes
Year builtnewer than190824% of homes25% of homes

About 509 Grove St

How much is 509 Grove St, Decorah, IA worth?

The TopHap Estimate for 509 Grove St, Decorah, IA is $225,778 as of Aug 30, 2026. The likely range is $199,545 to $252,011. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Grove St, Decorah, IA last sell?

509 Grove St, Decorah, IA last sold on Jul 30, 2012 for $110,000, according to the county's recorded deed.

How big is 509 Grove St, Decorah, IA?

509 Grove St, Decorah, IA has 3 bedrooms, 2.5 bathrooms, 1,514 square feet of living space and a 0.28-acre lot.

When was 509 Grove St, Decorah, IA built?

509 Grove St, Decorah, IA was built in 1908, making it 118 years old. The building has 1 story.

What schools serve 509 Grove St, Decorah, IA?

509 Grove St, Decorah, IA is assigned to Decorah Middle School (middle), rated A; John Cline Elementary School (elementary); Decorah High School (high), rated A. All sit in Decorah Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 Grove St, Decorah, IA compare to other homes in Decorah 52101?

Among the 5,096 homes in Decorah 52101, it is worth more than 38% of them ($225,778 against a typical $263,445), its price per square foot is higher than 35% of them ($149 against a typical $179), it is bigger than 50% of them (1,514 ft² against a typical 1,523 ft²), its lot is bigger than 34% of them (0.28 ac against a typical 0.48 ac) and it is newer than 24% of them (1908 against a typical 1969). Measured against all of Winneshiek County, it is worth more than 50% 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 509 Grove St, Decorah, IA?

The 2025 property tax bill for 509 Grove St, Decorah, IA was $3,778. The county assessed it at $218,440.

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