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Single Family ResidenceResidential
$54,705$24 / 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 78How 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

100 1ST ST

OTTOSEN, IA 50570
1
Baths
2,292 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
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

$55K
$42K low$67K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$722 (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.$60,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$59,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$59,040
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$60,600

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyHUMBOLDT
Lot (acres)The size of the land the home sits on, from county records.0.14
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.None
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.Patio · 869 ft²

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

E
Twin Rivers Elementary School
Elementary · Grades PK–5 · 4.9 mi
H
Humboldt High SchoolB+
High · Grades 9–12 · 14.6 mi
M
Humboldt Middle SchoolB+
Middle · Grades 5–8 · 14.7 mi

District: Humboldt Community School District

Neighborhood · ZIP 50570These 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.116
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
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.18%
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.0.9%
PopulationHow many people live in this area.405
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.9 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,230
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,391
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.32 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

100 1st 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 86% of homes in Humboldt County
  • Among the lowest price per square foot in Ottosen 50570
  • Bigger than 89% of homes in Humboldt County
  • Has a smaller lot than 90% of homes in Humboldt County
  • Older than 84% of homes in Humboldt County

What homes are worth in Ottosen 50570

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

This home
$31K$425K

This home is worth more than 30% of homes in Ottosen 50570.

How it measures up in Ottosen 50570

The dot is this home. The mark in the middle is the typical home in Ottosen 50570.

Estimated value$54,705
CheaperTypical $93,714Pricier

Pricier than 30% of homes nearby

Price per ft²$24
CheaperTypical $58Pricier

Cheaper than almost all homes nearby

Living area2,292 ft²
SmallerTypical 1,722 ft²Bigger

Bigger than 83% of homes nearby

Lot size0.14 ac
SmallerTypical 3.96 acBigger

Bigger than 28% of homes nearby

Year built1900
OlderTypical 1930Newer

Newer than 27% of homes nearby

How 100 1st St ranks against every home in each area.
MeasureThis homeOttosen 50570Humboldt County
Estimated valuepricier than$54,70530% of homes14% of homes
Price per ft²pricier than$24almost no homesalmost no homes
Living areabigger than2,292 ft²83% of homes89% of homes
Lot sizebigger than0.14 ac28% of homes10% of homes
Year builtnewer than190027% of homes16% of homes

About 100 1st St

How much is 100 1st St, Ottosen, IA worth?

The TopHap Estimate for 100 1st St, Ottosen, IA is $54,705 as of Oct 21, 2026. The likely range is $42,439 to $66,971. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 100 1st St, Ottosen, IA last sell?

100 1st St, Ottosen, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 100 1st St, Ottosen, IA?

100 1st St, Ottosen, IA has 1 bathrooms, 2,292 square feet of living space and a 0.14-acre lot.

When was 100 1st St, Ottosen, IA built?

100 1st St, Ottosen, IA was built in 1900, making it 126 years old. The building has 1 story.

What schools serve 100 1st St, Ottosen, IA?

100 1st St, Ottosen, IA is assigned to Twin Rivers Elementary School (elementary); Humboldt High School (high), rated B+; Humboldt Middle School (middle), rated B+. All sit in Humboldt Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 100 1st St, Ottosen, IA compare to other homes in Ottosen 50570?

Among the 112 homes in Ottosen 50570, it is worth more than 30% of them ($54,705 against a typical $93,714), its price per square foot is higher than almost none of them ($24 against a typical $58), it is bigger than 83% of them (2,292 ft² against a typical 1,722 ft²), its lot is bigger than 28% of them (0.14 ac against a typical 3.96 ac) and it is newer than 27% of them (1900 against a typical 1930). Measured against all of Humboldt County, it is worth more than 14% 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 100 1st St, Ottosen, IA?

The 2025 property tax bill for 100 1st St, Ottosen, IA was $722. The county assessed it at $60,600.

Closest homes

More homes in Ottosen 50570

Assigned schools

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