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Rural ResidenceResidential
$402,530$257 / 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 70How 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

4504 20TH AVE

ARMSTRONG, IA 50514
1 / 1
Baths
1,568 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.
40 ac
Lot SizeThe size of the land the home sits on, from county records.
2011
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$403K
$280K low$525K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,484 (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.$103,050 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$97,833
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$5,217
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$77,994
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$103,050

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.33
37
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
11
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
58
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
48
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
11
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.7 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.Rural Residence
CountyKOSSUTH
Lot (acres)The size of the land the home sits on, from county records.40.00
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.Wood
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Mixed
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 · 100 ft²Shed · 1,040 ft²Patio · 356 ft²Porch · 40 ft²

Transaction History(2)

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.

H
North Union High SchoolA
High · Grades 9–12 · 3.2 mi
M
North Union Middle SchoolB+
Middle · Grades 6–8 · 5.9 mi
E
North Union Elementary School
Elementary · Grades PK–5 · 14.3 mi

District: North Kossuth Community School District

Neighborhood · ZIP 50514These 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.131
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.10

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.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
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.1,435
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.$59,921
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$70,449
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.31 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.61%

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

4504 20th Ave 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 more than 94% of homes in Armstrong 50514
  • Costs more per square foot than 96% of homes in Armstrong 50514
  • Among the largest lots in Armstrong 50514
  • Newer than 97% of homes in Armstrong 50514

What homes are worth in Armstrong 50514

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

This home
$43K$686K

This home is worth more than 94% of homes in Armstrong 50514.

How it measures up in Armstrong 50514

The dot is this home. The mark in the middle is the typical home in Armstrong 50514.

Estimated value$402,530
CheaperTypical $133,176Pricier

Pricier than 94% of homes nearby

Price per ft²$257
CheaperTypical $89Pricier

Pricier than 96% of homes nearby

Living area1,568 ft²
SmallerTypical 1,448 ft²Bigger

Bigger than 58% of homes nearby

Lot size40 ac
SmallerTypical 0.32 acBigger

Bigger than almost all homes nearby

Year built2011
OlderTypical 1947Newer

Newer than 97% of homes nearby

How 4504 20th Ave ranks against every home in each area.
MeasureThis homeArmstrong 50514Kossuth County
Estimated valuepricier than$402,53094% of homes94% of homes
Price per ft²pricier than$25796% of homes96% of homes
Living areabigger than1,568 ft²58% of homes59% of homes
Lot sizebigger than40 acalmost all homesalmost all homes
Year builtnewer than201197% of homes97% of homes

About 4504 20th Ave

How much is 4504 20th Ave, Armstrong, IA worth?

The TopHap Estimate for 4504 20th Ave, Armstrong, IA is $402,530 as of Sep 24, 2026. The likely range is $280,420 to $524,640. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4504 20th Ave, Armstrong, IA last sell?

4504 20th Ave, Armstrong, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 4504 20th Ave, Armstrong, IA?

4504 20th Ave, Armstrong, IA has 1 bathrooms, 1,568 square feet of living space and a 40.00-acre lot.

When was 4504 20th Ave, Armstrong, IA built?

4504 20th Ave, Armstrong, IA was built in 2011, making it 15 years old. The building has 1 story.

What schools serve 4504 20th Ave, Armstrong, IA?

4504 20th Ave, Armstrong, IA is assigned to North Union High School (high), rated A; North Union Middle School (middle), rated B+; North Union Elementary School (elementary). All sit in North Kossuth Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4504 20th Ave, Armstrong, IA compare to other homes in Armstrong 50514?

Among the 658 homes in Armstrong 50514, it is worth more than 94% of them ($402,530 against a typical $133,176), its price per square foot is higher than 96% of them ($257 against a typical $89), it is bigger than 58% of them (1,568 ft² against a typical 1,448 ft²), its lot is bigger than almost all of them (40 ac against a typical 0.32 ac) and it is newer than 97% of them (2011 against a typical 1947). Measured against all of Kossuth County, it is worth more than 94% 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 4504 20th Ave, Armstrong, IA?

The 2025 property tax bill for 4504 20th Ave, Armstrong, IA was $3,484. The county assessed it at $103,050.

More homes on 20th Ave

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More homes in Armstrong 50514

Assigned schools

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