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Single Family ResidenceResidential
$491,935$122 / 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

4108 20TH AVE

ARMSTRONG, IA 50514
3 / 1
Baths
4,026 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.
6.64 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
17
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$492K
$343K low$641K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,232 (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.$385,056 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$60,770
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$324,286
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$350,638
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$385,056

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.34
39
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
15
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
59
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.8 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.0.2 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
CountyKOSSUTH
Lot (acres)The size of the land the home sits on, from county records.6.64
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Heat Pump
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.Deck · 276 ft²Patio · 120 ft²Porch · 366 ft²

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 · 3.6 mi
M
North Union Middle SchoolB+
Middle · Grades 6–8 · 5.6 mi
E
North Union Elementary School
Elementary · Grades PK–5 · 11.0 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%

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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

4108 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 97% of homes in Kossuth County
  • Costs more per square foot than 71% of homes in Armstrong 50514
  • Among the largest homes in Kossuth County
  • Has a bigger lot than 84% of homes in Kossuth County
  • Newer than 81% 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$630K

This home is worth more than 96% 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$491,935
CheaperTypical $131,871Pricier

Pricier than 96% of homes nearby

Price per ft²$122
CheaperTypical $90Pricier

Pricier than 71% of homes nearby

Living area4,026 ft²
SmallerTypical 1,456 ft²Bigger

Bigger than 98% of homes nearby

Lot size6.64 ac
SmallerTypical 0.32 acBigger

Bigger than 83% of homes nearby

Year built1978
OlderTypical 1947Newer

Newer than 81% of homes nearby

How 4108 20th Ave ranks against every home in each area.
MeasureThis homeArmstrong 50514Kossuth County
Estimated valuepricier than$491,93596% of homes97% of homes
Price per ft²pricier than$12271% of homes68% of homes
Living areabigger than4,026 ft²98% of homesalmost all homes
Lot sizebigger than6.64 ac83% of homes84% of homes
Year builtnewer than197881% of homes80% of homes

About 4108 20th Ave

How much is 4108 20th Ave, Armstrong, IA worth?

The TopHap Estimate for 4108 20th Ave, Armstrong, IA is $491,935 as of Sep 24, 2026. The likely range is $342,704 to $641,166. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4108 20th Ave, Armstrong, IA last sell?

4108 20th Ave, Armstrong, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 4108 20th Ave, Armstrong, IA?

4108 20th Ave, Armstrong, IA has 3 bathrooms, 4,026 square feet of living space and a 6.64-acre lot.

When was 4108 20th Ave, Armstrong, IA built?

4108 20th Ave, Armstrong, IA was built in 1978, making it 48 years old. The building has 2 stories.

What schools serve 4108 20th Ave, Armstrong, IA?

4108 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 4108 20th Ave, Armstrong, IA compare to other homes in Armstrong 50514?

Among the 658 homes in Armstrong 50514, it is worth more than 96% of them ($491,935 against a typical $131,871), its price per square foot is higher than 71% of them ($122 against a typical $90), it is bigger than 98% of them (4,026 ft² against a typical 1,456 ft²), its lot is bigger than 83% of them (6.64 ac against a typical 0.32 ac) and it is newer than 81% of them (1978 against a typical 1947). Measured against all of Kossuth County, it is worth more than 97% 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 4108 20th Ave, Armstrong, IA?

The 2025 property tax bill for 4108 20th Ave, Armstrong, IA was $3,232. The county assessed it at $385,056.

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