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Single Family ResidenceResidential
$84,302$57 / 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 71How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

509 4TH ST

GRISWOLD, IA 51535
2
Beds
1
Baths
1,470 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1880
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$84K
$60K low$109K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,038 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$139,760 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,210
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$132,550
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$123,220
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$139,760

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.0.19
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Concrete
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.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, 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.Deck · 180 ft²Shed · 126 ft²Patio · 585 ft²Porch · 148 ft²

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Griswold Elementary SchoolC
Elementary · Grades PK–5 · 0.5 mi
M
Griswold Middle/High SchoolB-
Middle · Grades 6–12 · 0.5 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

509 4th 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 82% of homes in Griswold 51535
  • Costs less per square foot than 85% of homes in Griswold 51535
  • Has a smaller lot than 75% of homes in Griswold 51535
  • Among the oldest 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
$36K$527K

This home is worth more than 18% 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$84,302
CheaperTypical $141,194Pricier

Pricier than 18% of homes nearby

Price per ft²$57
CheaperTypical $96Pricier

Pricier than 15% of homes nearby

Living area1,470 ft²
SmallerTypical 1,494 ft²Bigger

Bigger than 48% of homes nearby

Lot size0.19 ac
SmallerTypical 0.41 acBigger

Bigger than 25% of homes nearby

Year built1880
OlderTypical 1925Newer

Older than almost all homes nearby

How 509 4th St ranks against every home in each area.
MeasureThis homeGriswold 51535Cass County
Estimated valuepricier than$84,30218% of homes27% of homes
Price per ft²pricier than$5715% of homes21% of homes
Living areabigger than1,470 ft²48% of homes53% of homes
Lot sizebigger than0.19 ac25% of homes31% of homes
Year builtnewer than1880almost no homes2% of homes

About 509 4th St

How much is 509 4th St, Griswold, IA worth?

The TopHap Estimate for 509 4th St, Griswold, IA is $84,302 as of Sep 24, 2026. The likely range is $59,829 to $108,775. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 4th St, Griswold, IA last sell?

509 4th St, Griswold, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 509 4th St, Griswold, IA?

509 4th St, Griswold, IA has 2 bedrooms, 1 bathrooms, 1,470 square feet of living space and a 0.19-acre lot.

When was 509 4th St, Griswold, IA built?

509 4th St, Griswold, IA was built in 1880, making it 146 years old. The building has 2 stories.

What schools serve 509 4th St, Griswold, IA?

509 4th St, Griswold, IA is assigned to Griswold Elementary School (elementary), rated C; Griswold Middle/High School (middle), rated B-. All sit in Griswold Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 4th St, Griswold, IA compare to other homes in Griswold 51535?

Among the 859 homes in Griswold 51535, it is worth more than 18% of them ($84,302 against a typical $141,194), its price per square foot is higher than 15% of them ($57 against a typical $96), it is bigger than 48% of them (1,470 ft² against a typical 1,494 ft²), its lot is bigger than 25% of them (0.19 ac against a typical 0.41 ac) and it is newer than almost none of them (1880 against a typical 1925). Measured against all of Cass County, it is worth more than 27% 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 4th St, Griswold, IA?

The 2026 property tax bill for 509 4th St, Griswold, IA was $2,038. The county assessed it at $139,760.

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