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Single Family ResidenceResidential
$193,167$99 / 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 73How 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

403 S UNION ST

MADRID, IA 50156
3
Beds
7 / 3
Baths
1,950 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.
3.65 ac
Lot SizeThe size of the land the home sits on, from county records.
1998
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
9
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

$193K
$141K low$246K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,052 (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.$412,770 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$77,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$335,270
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$412,770
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$412,770

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.161 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 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
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyBoone
Lot (acres)The size of the land the home sits on, from county records.3.65
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.Asphalt
HeatingThe type of heating system in the home.Yes
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 · 154 ft²Patio · 215 ft²Porch · 327 ft²

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

E
Madrid Elementary SchoolB
Elementary · Grades KG–5 · 0.3 mi
H
Madrid High SchoolB+
High · Grades 9–12 · 0.7 mi
M
Madrid Junior High SchoolB-
Middle · Grades 6–8 · 0.7 mi

District: Madrid Community School District

Neighborhood · ZIP 50156These 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.87
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.7,341
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.81 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$109,355
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$118,956
Average tempThe average temperature here across a full year.49°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

403 S Union 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 less than 72% of homes in Madrid 50156
  • Costs less per square foot than 95% of homes in Madrid 50156
  • Bigger than 81% of homes in Boone County
  • Has a bigger lot than 83% of homes in Boone County
  • Newer than 82% of homes in Boone County

What homes are worth in Madrid 50156

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

This home
$100K$745K

This home is worth more than 28% of homes in Madrid 50156.

How it measures up in Madrid 50156

The dot is this home. The mark in the middle is the typical home in Madrid 50156.

Estimated value$193,167
CheaperTypical $262,343Pricier

Pricier than 28% of homes nearby

Price per ft²$99
CheaperTypical $194Pricier

Pricier than 5% of homes nearby

Living area1,950 ft²
SmallerTypical 1,442 ft²Bigger

Bigger than 80% of homes nearby

Lot size3.65 ac
SmallerTypical 0.43 acBigger

Bigger than 80% of homes nearby

Year built1998
OlderTypical 1964Newer

Newer than 76% of homes nearby

How 403 S Union St ranks against every home in each area.
MeasureThis homeMadrid 50156Boone County
Estimated valuepricier than$193,16728% of homes46% of homes
Price per ft²pricier than$995% of homes19% of homes
Living areabigger than1,950 ft²80% of homes81% of homes
Lot sizebigger than3.65 ac80% of homes83% of homes
Year builtnewer than199876% of homes82% of homes

About 403 S Union St

How much is 403 S Union St, Madrid, IA worth?

The TopHap Estimate for 403 S Union St, Madrid, IA is $193,167 as of Sep 24, 2026. The likely range is $140,762 to $245,572. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 403 S Union St, Madrid, IA last sell?

403 S Union St, Madrid, IA last sold on Jul 18, 2024, according to the county's recorded deed.

How big is 403 S Union St, Madrid, IA?

403 S Union St, Madrid, IA has 3 bedrooms, 7 bathrooms, 1,950 square feet of living space and a 3.65-acre lot.

When was 403 S Union St, Madrid, IA built?

403 S Union St, Madrid, IA was built in 1998, making it 28 years old. It is a ranch home. The building has 1 story.

What schools serve 403 S Union St, Madrid, IA?

403 S Union St, Madrid, IA is assigned to Madrid Elementary School (elementary), rated B; Madrid High School (high), rated B+; Madrid Junior High School (middle), rated B-. All sit in Madrid Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 403 S Union St, Madrid, IA compare to other homes in Madrid 50156?

Among the 1,759 homes in Madrid 50156, it is worth more than 28% of them ($193,167 against a typical $262,343), its price per square foot is higher than 5% of them ($99 against a typical $194), it is bigger than 80% of them (1,950 ft² against a typical 1,442 ft²), its lot is bigger than 80% of them (3.65 ac against a typical 0.43 ac) and it is newer than 76% of them (1998 against a typical 1964). Measured against all of Boone County, it is worth more than 46% 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 403 S Union St, Madrid, IA?

The 2024 property tax bill for 403 S Union St, Madrid, IA was $8,052. The county assessed it at $412,770.

More homes on S Union St

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