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Single Family ResidenceResidential
$208,974$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 84How 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 $165,000 on Sep 11, 2023

509 DECORAH AVE

DECORAH, IA 52101
3
Beds
2
Baths
1,516 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1890
Year BuiltThe year the home was originally built, according to county records.
2
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$209K
$175K low$243K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$165,000 · Sep 11, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,892 (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.$225,050 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$26,760
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$198,290
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$198,370
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$225,050

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.29 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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
CountyWINNESHIEK
Lot (acres)The size of the land the home sits on, from county records.0.15
ConstructionThe main material the home's frame and walls are built from.Brick
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
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.Porch · 98 ft²

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.

H
Decorah High SchoolA
High · Grades 9–12 · 0.3 mi
E
John Cline Elementary School
Elementary · Grades KG–2 · 0.3 mi
M
Decorah Middle SchoolA
Middle · Grades 5–8 · 0.5 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%

Owner Tools

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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 Decorah Ave 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 68% of homes in Decorah 52101
  • Costs less per square foot than 71% of homes in Decorah 52101
  • Has a smaller lot than 89% of homes in Winneshiek County
  • Older than 92% of homes in Winneshiek County

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$673K

This home is worth more than 32% 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$208,974
CheaperTypical $262,750Pricier

Pricier than 32% of homes nearby

Price per ft²$138
CheaperTypical $179Pricier

Pricier than 29% of homes nearby

Living area1,516 ft²
SmallerTypical 1,523 ft²Bigger

Bigger than 49% of homes nearby

Lot size0.15 ac
SmallerTypical 0.47 acBigger

Bigger than 14% of homes nearby

Year built1890
OlderTypical 1969Newer

Newer than 10% of homes nearby

How 509 Decorah Ave ranks against every home in each area.
MeasureThis homeDecorah 52101Winneshiek County
Estimated valuepricier than$208,97432% of homes45% of homes
Price per ft²pricier than$13829% of homes44% of homes
Living areabigger than1,516 ft²49% of homes47% of homes
Lot sizebigger than0.15 ac14% of homes11% of homes
Year builtnewer than189010% of homes8% of homes

About 509 Decorah Ave

How much is 509 Decorah Ave, Decorah, IA worth?

The TopHap Estimate for 509 Decorah Ave, Decorah, IA is $208,974 as of Aug 30, 2026. The likely range is $175,028 to $242,920. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Decorah Ave, Decorah, IA last sell?

509 Decorah Ave, Decorah, IA last sold on Sep 11, 2023 for $165,000, according to the county's recorded deed.

How big is 509 Decorah Ave, Decorah, IA?

509 Decorah Ave, Decorah, IA has 3 bedrooms, 2 bathrooms, 1,516 square feet of living space and a 0.15-acre lot.

When was 509 Decorah Ave, Decorah, IA built?

509 Decorah Ave, Decorah, IA was built in 1890, making it 136 years old. The building has 2 stories.

What schools serve 509 Decorah Ave, Decorah, IA?

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

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

Among the 5,096 homes in Decorah 52101, it is worth more than 32% of them ($208,974 against a typical $262,750), its price per square foot is higher than 29% of them ($138 against a typical $179), it is bigger than 49% of them (1,516 ft² against a typical 1,523 ft²), its lot is bigger than 14% of them (0.15 ac against a typical 0.47 ac) and it is newer than 10% of them (1890 against a typical 1969). Measured against all of Winneshiek County, it is worth more than 45% 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 Decorah Ave, Decorah, IA?

The 2025 property tax bill for 509 Decorah Ave, Decorah, IA was $3,892. The county assessed it at $225,050.

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