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Residential (General/Single)Residential
$111,753$146 / 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 87How 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
Last sold for $90,000 on Dec 30, 2022

821 MAIN ST

MAPLETON, IA 51034
1
Beds
1
Baths
768 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1976
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$112K
$98K low$126K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$90,000 · Dec 30, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,056 (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.$92,351 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,704
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$84,647
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$79,655
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$92,351

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.31
10
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
27
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
65
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
43
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
12
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.6%
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.Residential (General/Single)
CountyMONONA
Lot (acres)The size of the land the home sits on, from county records.0.17
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.Block (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
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.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 · 36 ft²Porch · 20 ft²

Transaction History(1)

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.

E
Mapleton Elementary SchoolB
Elementary · Grades PK–5 · 0.4 mi
H
Maple Valley-Anthon Oto High SchoolC-
High · Grades 9–12 · 0.4 mi
M
Mvao Middle School
Middle · Grades 6–8 · 15.7 mi

District: Maple Valley-Anthon Oto Community School District

Neighborhood · ZIP 51034These 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.126
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
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.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.6.7%
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.1,716
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.15 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,772
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$74,042
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.30 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

821 Main 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.

  • Costs more per square foot than 80% of homes in Mapleton 51034
  • Smaller than 95% of homes in Mapleton 51034
  • Has a smaller lot than 90% of homes in Monona County
  • Newer than 74% of homes in Mapleton 51034

What homes are worth in Mapleton 51034

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

This home
$33K$419K

This home is worth more than 46% of homes in Mapleton 51034.

How it measures up in Mapleton 51034

The dot is this home. The mark in the middle is the typical home in Mapleton 51034.

Estimated value$111,753
CheaperTypical $119,599Pricier

Pricier than 46% of homes nearby

Price per ft²$146
CheaperTypical $92Pricier

Pricier than 80% of homes nearby

Living area768 ft²
SmallerTypical 1,432 ft²Bigger

Bigger than 5% of homes nearby

Lot size0.16 ac
SmallerTypical 0.32 acBigger

Bigger than 12% of homes nearby

Year built1976
OlderTypical 1948Newer

Newer than 74% of homes nearby

How 821 Main St ranks against every home in each area.
MeasureThis homeMapleton 51034Monona County
Estimated valuepricier than$111,75346% of homes52% of homes
Price per ft²pricier than$14680% of homes77% of homes
Living areabigger than768 ft²5% of homes8% of homes
Lot sizebigger than0.16 ac12% of homes10% of homes
Year builtnewer than197674% of homes71% of homes

About 821 Main St

How much is 821 Main St, Mapleton, IA worth?

The TopHap Estimate for 821 Main St, Mapleton, IA is $111,753 as of Sep 24, 2026. The likely range is $97,624 to $125,882. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 821 Main St, Mapleton, IA last sell?

821 Main St, Mapleton, IA last sold on Dec 30, 2022 for $90,000, according to the county's recorded deed.

How big is 821 Main St, Mapleton, IA?

821 Main St, Mapleton, IA has 1 bedrooms, 1 bathrooms, 768 square feet of living space and a 0.17-acre lot.

When was 821 Main St, Mapleton, IA built?

821 Main St, Mapleton, IA was built in 1976, making it 50 years old. The building has 1 story.

What schools serve 821 Main St, Mapleton, IA?

821 Main St, Mapleton, IA is assigned to Mapleton Elementary School (elementary), rated B; Maple Valley-Anthon Oto High School (high), rated C-; Mvao Middle School (middle). All sit in Maple Valley-Anthon Oto Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 821 Main St, Mapleton, IA compare to other homes in Mapleton 51034?

Among the 914 homes in Mapleton 51034, it is worth more than 46% of them ($111,753 against a typical $119,599), its price per square foot is higher than 80% of them ($146 against a typical $92), it is bigger than 5% of them (768 ft² against a typical 1,432 ft²), its lot is bigger than 12% of them (0.16 ac against a typical 0.32 ac) and it is newer than 74% of them (1976 against a typical 1948). Measured against all of Monona County, it is worth more than 52% 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 821 Main St, Mapleton, IA?

The 2026 property tax bill for 821 Main St, Mapleton, IA was $1,056. The county assessed it at $92,351.

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