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Single Family ResidenceResidential
$68,907$70 / 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 64How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

405 WALNUT ST

WALNUT, IA 51577
4
Beds
1
Baths
983 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.
1920
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.

Valuation

$69K
$44K low$94K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,564 (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.$106,100 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$90,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$106,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$106,100

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.39
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
23
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
70
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
55
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
47
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyPOTTAWATTAMIE
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1930
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)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Brick (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
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 · 112 ft²

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

M
AHSTW Intermediate SchoolB+
Middle · Grades 4–8 · 6.3 mi
H
AHSTW High SchoolA-
High · Grades 9–12 · 6.3 mi
E
AHSTW Primary SchoolB-
Elementary · Grades PK–3 · 6.3 mi

District: Ahstw Community School District

Neighborhood · ZIP 51577These 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.173
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.15

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.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.1,061
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.$68,405
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,432
Average tempThe average temperature here across a full year.49°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.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

405 Walnut 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 98% of homes in Pottawattamie County
  • Among the lowest price per square foot in Pottawattamie County
  • Smaller than 72% of homes in Walnut 51577
  • Older than 71% of homes in Pottawattamie County

What homes are worth in Walnut 51577

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

This home
$41K$480K

This home is worth more than 13% of homes in Walnut 51577.

How it measures up in Walnut 51577

The dot is this home. The mark in the middle is the typical home in Walnut 51577.

Estimated value$68,907
CheaperTypical $114,732Pricier

Pricier than 13% of homes nearby

Price per ft²$70
CheaperTypical $108Pricier

Pricier than 7% of homes nearby

Living area983 ft²
SmallerTypical 1,146 ft²Bigger

Bigger than 28% of homes nearby

Lot size0.28 ac
SmallerTypical 0.41 acBigger

Bigger than 42% of homes nearby

Year built1920
OlderTypical 1920Newer

Newer than 62% of homes nearby

How 405 Walnut St ranks against every home in each area.
MeasureThis homeWalnut 51577Pottawattamie County
Estimated valuepricier than$68,90713% of homes2% of homes
Price per ft²pricier than$707% of homesalmost no homes
Living areabigger than983 ft²28% of homes36% of homes
Lot sizebigger than0.28 ac42% of homes63% of homes
Year builtnewer than192062% of homes29% of homes

About 405 Walnut St

How much is 405 Walnut St, Walnut, IA worth?

The TopHap Estimate for 405 Walnut St, Walnut, IA is $68,907 as of Oct 21, 2026. The likely range is $43,905 to $93,909. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 405 Walnut St, Walnut, IA last sell?

405 Walnut St, Walnut, IA last sold on Mar 8, 2021, according to the county's recorded deed.

How big is 405 Walnut St, Walnut, IA?

405 Walnut St, Walnut, IA has 4 bedrooms, 1 bathrooms, 983 square feet of living space and a 0.28-acre lot.

When was 405 Walnut St, Walnut, IA built?

405 Walnut St, Walnut, IA was built in 1920, making it 106 years old. The building has 2 stories.

What schools serve 405 Walnut St, Walnut, IA?

405 Walnut St, Walnut, IA is assigned to AHSTW Intermediate School (middle), rated B+; AHSTW High School (high), rated A-; AHSTW Primary School (elementary), rated B-. All sit in Ahstw Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 405 Walnut St, Walnut, IA compare to other homes in Walnut 51577?

Among the 552 homes in Walnut 51577, it is worth more than 13% of them ($68,907 against a typical $114,732), its price per square foot is higher than 7% of them ($70 against a typical $108), it is bigger than 28% of them (983 ft² against a typical 1,146 ft²), its lot is bigger than 42% of them (0.28 ac against a typical 0.41 ac) and it is newer than 62% of them (1920 against a typical 1920). Measured against all of Pottawattamie County, it is worth more than 2% 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 405 Walnut St, Walnut, IA?

The 2025 property tax bill for 405 Walnut St, Walnut, IA was $1,564. The county assessed it at $106,100.

More homes on Walnut St

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Assigned schools

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