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Duplex (2 Units, Any Combination)Residential
$122,313$104 / 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 81How 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

512 CASS ST

GRISWOLD, IA 51535
2
Beds
2
Baths
1,177 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.
1997
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$122K
$99K low$145K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,238 (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.$167,010 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,260
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$161,750
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$160,220
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$167,010

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.55 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
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.Asphalt
HeatingThe type of heating system in the home.Yes
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, 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.Shed · 63 ft²Patio · 110 ft²Porch · 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.

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%

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

512 Cass 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.

  • Smaller than 74% of homes in Griswold 51535
  • Has a smaller lot than 87% of homes in Cass County
  • Newer than 91% 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$509K

This home is worth more than 42% 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$122,313
CheaperTypical $132,938Pricier

Pricier than 42% of homes nearby

Price per ft²$104
CheaperTypical $89Pricier

Pricier than 63% of homes nearby

Living area1,177 ft²
SmallerTypical 1,494 ft²Bigger

Bigger than 26% of homes nearby

Lot size0.14 ac
SmallerTypical 0.41 acBigger

Bigger than 19% of homes nearby

Year built1997
OlderTypical 1923Newer

Newer than 91% of homes nearby

How 512 Cass St ranks against every home in each area.
MeasureThis homeGriswold 51535Cass County
Estimated valuepricier than$122,31342% of homes49% of homes
Price per ft²pricier than$10463% of homes64% of homes
Living areabigger than1,177 ft²26% of homes30% of homes
Lot sizebigger than0.14 ac19% of homes13% of homes
Year builtnewer than199791% of homes91% of homes

About 512 Cass St

How much is 512 Cass St, Griswold, IA worth?

The TopHap Estimate for 512 Cass St, Griswold, IA is $122,313 as of Aug 30, 2026. The likely range is $99,281 to $145,345. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 512 Cass St, Griswold, IA last sell?

512 Cass St, Griswold, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 512 Cass St, Griswold, IA?

512 Cass St, Griswold, IA has 2 bedrooms, 2 bathrooms, 1,177 square feet of living space and a 0.14-acre lot.

When was 512 Cass St, Griswold, IA built?

512 Cass St, Griswold, IA was built in 1997, making it 29 years old. It is a duplex single home. The building has 1 story.

What schools serve 512 Cass St, Griswold, IA?

512 Cass 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 512 Cass St, Griswold, IA compare to other homes in Griswold 51535?

Among the 858 homes in Griswold 51535, it is worth more than 42% of them ($122,313 against a typical $132,938), its price per square foot is higher than 63% of them ($104 against a typical $89), it is bigger than 26% of them (1,177 ft² against a typical 1,494 ft²), its lot is bigger than 19% of them (0.14 ac against a typical 0.41 ac) and it is newer than 91% of them (1997 against a typical 1923). Measured against all of Cass County, it is worth more than 49% 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 512 Cass St, Griswold, IA?

The 2025 property tax bill for 512 Cass St, Griswold, IA was $2,238. The county assessed it at $167,010.

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