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Single Family ResidenceResidential
$293,203$185 / 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 77How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

503 3RD ST

MONONA, IA 52159
4
Beds
2.5
Baths
1,584 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.
0.57 ac
Lot SizeThe size of the land the home sits on, from county records.
1975
Year BuiltThe year the home was originally built, according to county records.
7
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

$293K
$227K low$360K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,646 (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.$253,204 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$26,267
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$226,937
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$214,210
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$253,204

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.16 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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Contemporary
CountyCLAYTON
Lot (acres)The size of the land the home sits on, from county records.0.57
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.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
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 · 313 ft²Patio · 120 ft²

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

E
Mfl Marmac Elementary SchoolB-
Elementary · Grades PK–3 · 0.2 mi
H
Mfl Marmac High SchoolC-
High · Grades 9–12 · 0.2 mi
M
Mfl Marmac Middle SchoolB+
Middle · Grades 6–8 · 10.8 mi

District: Mfl Marmac Community School District

Neighborhood · ZIP 52159These 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.118
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.77
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.11

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.88%
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.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.2,409
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.35 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$62,290
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$86,692
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.34 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

503 3rd 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 more than 85% of homes in Monona 52159
  • Costs more per square foot than 86% of homes in Monona 52159
  • Newer than 72% of homes in Monona 52159

What homes are worth in Monona 52159

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

This home
$52K$437K

This home is worth more than 85% of homes in Monona 52159.

How it measures up in Monona 52159

The dot is this home. The mark in the middle is the typical home in Monona 52159.

Estimated value$293,203
CheaperTypical $162,003Pricier

Pricier than 85% of homes nearby

Price per ft²$185
CheaperTypical $106Pricier

Pricier than 86% of homes nearby

Living area1,584 ft²
SmallerTypical 1,568 ft²Bigger

Bigger than 51% of homes nearby

Lot size0.57 ac
SmallerTypical 0.38 acBigger

Bigger than 60% of homes nearby

Year built1975
OlderTypical 1948Newer

Newer than 72% of homes nearby

How 503 3rd St ranks against every home in each area.
MeasureThis homeMonona 52159Clayton County
Estimated valuepricier than$293,20385% of homes76% of homes
Price per ft²pricier than$18586% of homes74% of homes
Living areabigger than1,584 ft²51% of homes54% of homes
Lot sizebigger than0.57 ac60% of homes50% of homes
Year builtnewer than197572% of homes63% of homes

About 503 3rd St

How much is 503 3rd St, Monona, IA worth?

The TopHap Estimate for 503 3rd St, Monona, IA is $293,203 as of Oct 21, 2026. The likely range is $226,602 to $359,804. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 503 3rd St, Monona, IA last sell?

503 3rd St, Monona, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 503 3rd St, Monona, IA?

503 3rd St, Monona, IA has 4 bedrooms, 2.5 bathrooms, 1,584 square feet of living space and a 0.57-acre lot.

When was 503 3rd St, Monona, IA built?

503 3rd St, Monona, IA was built in 1975, making it 51 years old. It is a contemporary home.

What schools serve 503 3rd St, Monona, IA?

503 3rd St, Monona, IA is assigned to Mfl Marmac Elementary School (elementary), rated B-; Mfl Marmac High School (high), rated C-; Mfl Marmac Middle School (middle), rated B+. All sit in Mfl Marmac Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 503 3rd St, Monona, IA compare to other homes in Monona 52159?

Among the 958 homes in Monona 52159, it is worth more than 85% of them ($293,203 against a typical $162,003), its price per square foot is higher than 86% of them ($185 against a typical $106), it is bigger than 51% of them (1,584 ft² against a typical 1,568 ft²), its lot is bigger than 60% of them (0.57 ac against a typical 0.38 ac) and it is newer than 72% of them (1975 against a typical 1948). Measured against all of Clayton County, it is worth more than 76% 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 503 3rd St, Monona, IA?

The 2025 property tax bill for 503 3rd St, Monona, IA was $3,646. The county assessed it at $253,204.

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