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Single Family ResidenceResidential
$120,132$130 / 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 67How 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 Jun 2, 2025

451 S WALNUT ST

AVOCA, IA 51521
3
Beds
1
Baths
922 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.
1900
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$120K
$81K low$159K 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 · Jun 2, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,750 (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.$114,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$17,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$97,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$105,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$114,800

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.53
80
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
13
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
71
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.20 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.Single Family Residence
CountyPOTTAWATTAMIE
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)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
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 · 140 ft²Porch · 280 ft²

Transaction History(3)

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.

M
AHSTW Intermediate SchoolA
Middle · Grades 4–8 · 0.3 mi
H
AHSTW High SchoolB+
High · Grades 9–12 · 0.3 mi
E
AHSTW Primary SchoolB-
Elementary · Grades PK–3 · 0.3 mi

District: Ahstw Community School District

Neighborhood · ZIP 51521These 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.135
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.8%
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.2,321
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.27 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,641
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$90,943
Average tempThe average temperature here across a full year.49°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

451 S 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 90% of homes in Pottawattamie County
  • Costs less per square foot than 90% of homes in Pottawattamie County
  • Smaller than 81% of homes in Avoca 51521
  • Older than 91% of homes in Pottawattamie County

What homes are worth in Avoca 51521

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

This home
$51K$510K

This home is worth more than 20% of homes in Avoca 51521.

How it measures up in Avoca 51521

The dot is this home. The mark in the middle is the typical home in Avoca 51521.

Estimated value$120,132
CheaperTypical $190,939Pricier

Pricier than 20% of homes nearby

Price per ft²$130
CheaperTypical $163Pricier

Pricier than 28% of homes nearby

Living area922 ft²
SmallerTypical 1,252 ft²Bigger

Bigger than 19% of homes nearby

Lot size0.28 ac
SmallerTypical 0.32 acBigger

Bigger than 45% of homes nearby

Year built1900
OlderTypical 1944Newer

Newer than 19% of homes nearby

How 451 S Walnut St ranks against every home in each area.
MeasureThis homeAvoca 51521Pottawattamie County
Estimated valuepricier than$120,13220% of homes10% of homes
Price per ft²pricier than$13028% of homes10% of homes
Living areabigger than922 ft²19% of homes27% of homes
Lot sizebigger than0.28 ac45% of homes62% of homes
Year builtnewer than190019% of homes9% of homes

About 451 S Walnut St

How much is 451 S Walnut St, Avoca, IA worth?

The TopHap Estimate for 451 S Walnut St, Avoca, IA is $120,132 as of Aug 30, 2026. The likely range is $81,001 to $159,263. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 451 S Walnut St, Avoca, IA last sell?

451 S Walnut St, Avoca, IA last sold on Jun 2, 2025 for $165,000, according to the county's recorded deed.

How big is 451 S Walnut St, Avoca, IA?

451 S Walnut St, Avoca, IA has 3 bedrooms, 1 bathrooms, 922 square feet of living space and a 0.28-acre lot.

When was 451 S Walnut St, Avoca, IA built?

451 S Walnut St, Avoca, IA was built in 1900, making it 126 years old. The building has 1 story.

What schools serve 451 S Walnut St, Avoca, IA?

451 S Walnut St, Avoca, IA is assigned to AHSTW Intermediate School (middle), rated A; AHSTW High School (high), rated B+; 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 451 S Walnut St, Avoca, IA compare to other homes in Avoca 51521?

Among the 1,036 homes in Avoca 51521, it is worth more than 20% of them ($120,132 against a typical $190,939), its price per square foot is higher than 28% of them ($130 against a typical $163), it is bigger than 19% of them (922 ft² against a typical 1,252 ft²), its lot is bigger than 45% of them (0.28 ac against a typical 0.32 ac) and it is newer than 19% of them (1900 against a typical 1944). Measured against all of Pottawattamie County, it is worth more than 10% 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 451 S Walnut St, Avoca, IA?

The 2025 property tax bill for 451 S Walnut St, Avoca, IA was $1,750. The county assessed it at $114,800.

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