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Single Family ResidenceResidential
$141,786$82 / 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 86How 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 $93,000 on Feb 21, 2019

500 MILLS ST

GRISWOLD, IA 51535
3
Beds
1.5
Baths
1,720 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1923
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$142K
$122K low$162K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$93,000 · Feb 21, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,016 (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.$190,730 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$182,930
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$173,830
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$190,730

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

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
CountyCASS
Lot (acres)The size of the land the home sits on, from county records.0.14
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.Tile
HeatingThe type of heating system in the home.Geo-Thermal
CoolingThe type of cooling or air conditioning in the home.Yes
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, 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.Patio · 90 ft²Porch · 174 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.

E
Griswold Elementary SchoolD+
Elementary · Grades PK–5 · 0.7 mi
M
Griswold Middle/High SchoolA-
Middle · Grades 6–12 · 0.7 mi

District: Griswold Community School District

Neighborhood · ZIP 51535These 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.108
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
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.88%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.8%
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.1,733
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.13 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$78,385
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$91,020
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.35 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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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

500 Mills 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.

  • Bigger than 69% of homes in Cass County
  • Has a smaller lot than 95% of homes in Griswold 51535

What homes are worth in Griswold 51535

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

This home
$38K$505K

This home is worth more than 54% of homes in Griswold 51535.

How it measures up in Griswold 51535

The dot is this home. The mark in the middle is the typical home in Griswold 51535.

Estimated value$141,786
CheaperTypical $132,938Pricier

Pricier than 54% of homes nearby

Price per ft²$82
CheaperTypical $89Pricier

Pricier than 41% of homes nearby

Living area1,720 ft²
SmallerTypical 1,493 ft²Bigger

Bigger than 66% of homes nearby

Lot size0.14 ac
SmallerTypical 0.41 acBigger

Bigger than 5% of homes nearby

Year built1923
OlderTypical 1925Newer

Newer than 50% of homes nearby

How 500 Mills St ranks against every home in each area.
MeasureThis homeGriswold 51535Cass County
Estimated valuepricier than$141,78654% of homes59% of homes
Price per ft²pricier than$8241% of homes46% of homes
Living areabigger than1,720 ft²66% of homes69% of homes
Lot sizebigger than0.14 ac5% of homes9% of homes
Year builtnewer than192350% of homes45% of homes

About 500 Mills St

How much is 500 Mills St, Griswold, IA worth?

The TopHap Estimate for 500 Mills St, Griswold, IA is $141,786 as of Aug 30, 2026. The likely range is $121,780 to $161,792. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 500 Mills St, Griswold, IA last sell?

500 Mills St, Griswold, IA last sold on Feb 21, 2019 for $93,000, according to the county's recorded deed.

How big is 500 Mills St, Griswold, IA?

500 Mills St, Griswold, IA has 3 bedrooms, 1.5 bathrooms, 1,720 square feet of living space and a 0.14-acre lot.

When was 500 Mills St, Griswold, IA built?

500 Mills St, Griswold, IA was built in 1923, making it 103 years old. The building has 2 stories.

What schools serve 500 Mills St, Griswold, IA?

500 Mills St, Griswold, IA is assigned to Griswold Elementary School (elementary), rated D+; Griswold Middle/High School (middle), rated A-. All sit in Griswold Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 500 Mills St, Griswold, IA compare to other homes in Griswold 51535?

Among the 858 homes in Griswold 51535, it is worth more than 54% of them ($141,786 against a typical $132,938), its price per square foot is higher than 41% of them ($82 against a typical $89), it is bigger than 66% of them (1,720 ft² against a typical 1,493 ft²), its lot is bigger than 5% of them (0.14 ac against a typical 0.41 ac) and it is newer than 50% of them (1923 against a typical 1925). Measured against all of Cass County, it is worth more than 59% 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 500 Mills St, Griswold, IA?

The 2025 property tax bill for 500 Mills St, Griswold, IA was $3,016. The county assessed it at $190,730.

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Assigned schools

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