Skip to content
Skip to content
TopHapOpen in map
Residential (General/Single)Residential
$85,091$82 / 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 72How 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

809 4TH ST

ONAWA, IA 51040
2
Beds
1
Baths
1,032 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.
0.19 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.
5
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

$85K
$61K low$109K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,658 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$158,732 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$8,666
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$150,066
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$136,075
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$158,732

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.38
30
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
34
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
69
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
47
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.5 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.Residential (General/Single)
CountyMONONA
Lot (acres)The size of the land the home sits on, from county records.0.19
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
HeatingThe type of heating system in the home.Heat Pump
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 · 64 ft²Porch · 468 ft²

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

E
West Monona Elementary SchoolB-
Elementary · Grades PK–5 · 0.1 mi
H
West Monona High SchoolB
High · Grades 9–12 · 0.9 mi
M
West Monona Middle SchoolB
Middle · Grades 6–8 · 0.9 mi

District: West Monona Community School District

Neighborhood · ZIP 51040These 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.100
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 100.16

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.10%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.3,959
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.29 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$57,746
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$72,985
Average tempThe average temperature here across a full year.49°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%

Owner Tools

Do you own this home?
Claim this home

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

809 4th 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.

  • Smaller than 75% of homes in Monona County
  • Has a smaller lot than 88% of homes in Onawa 51040
  • Newer than 72% of homes in Onawa 51040

What homes are worth in Onawa 51040

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

This home
$23K$436K

This home is worth more than 39% of homes in Onawa 51040.

How it measures up in Onawa 51040

The dot is this home. The mark in the middle is the typical home in Onawa 51040.

Estimated value$85,091
CheaperTypical $106,062Pricier

Pricier than 39% of homes nearby

Price per ft²$82
CheaperTypical $87Pricier

Pricier than 46% of homes nearby

Living area1,032 ft²
SmallerTypical 1,296 ft²Bigger

Bigger than 28% of homes nearby

Lot size0.19 ac
SmallerTypical 0.19 acBigger

Bigger than 12% of homes nearby

Year built1976
OlderTypical 1951Newer

Newer than 72% of homes nearby

How 809 4th St ranks against every home in each area.
MeasureThis homeOnawa 51040Monona County
Estimated valuepricier than$85,09139% of homes43% of homes
Price per ft²pricier than$8246% of homes48% of homes
Living areabigger than1,032 ft²28% of homes25% of homes
Lot sizebigger than0.19 ac12% of homes13% of homes
Year builtnewer than197672% of homes71% of homes

About 809 4th St

How much is 809 4th St, Onawa, IA worth?

The TopHap Estimate for 809 4th St, Onawa, IA is $85,091 as of Aug 30, 2026. The likely range is $61,381 to $108,801. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 809 4th St, Onawa, IA last sell?

809 4th St, Onawa, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 809 4th St, Onawa, IA?

809 4th St, Onawa, IA has 2 bedrooms, 1 bathrooms, 1,032 square feet of living space and a 0.19-acre lot.

When was 809 4th St, Onawa, IA built?

809 4th St, Onawa, IA was built in 1976, making it 50 years old. The building has 1 story.

What schools serve 809 4th St, Onawa, IA?

809 4th St, Onawa, IA is assigned to West Monona Elementary School (elementary), rated B-; West Monona High School (high), rated B; West Monona Middle School (middle), rated B. All sit in West Monona Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 809 4th St, Onawa, IA compare to other homes in Onawa 51040?

Among the 1,938 homes in Onawa 51040, it is worth more than 39% of them ($85,091 against a typical $106,062), its price per square foot is higher than 46% of them ($82 against a typical $87), it is bigger than 28% of them (1,032 ft² against a typical 1,296 ft²), its lot is bigger than 12% of them (0.19 ac against a typical 0.19 ac) and it is newer than 72% of them (1976 against a typical 1951). Measured against all of Monona County, it is worth more than 43% 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 809 4th St, Onawa, IA?

The 2024 property tax bill for 809 4th St, Onawa, IA was $1,658. The county assessed it at $158,732.

More homes on 4th St

Closest homes

More homes in Onawa 51040

Assigned schools

Explore the area

See this home in context

Open 809 4th St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map