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Rural ResidenceResidential
$290,029$148 / 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 Sep 24, 2026

128 1100TH ST

PORTSMOUTH, IA 51565
5
Beds
1
Baths
1,954 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.
40 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$290K
$225K low$356K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,676 (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.$270,171 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$107,002
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$163,169
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$270,171
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$270,171

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
CountySHELBY
Lot (acres)The size of the land the home sits on, from county records.40.00
ConstructionThe main material the home's frame and walls are built from.Metal 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.Metal
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

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

M
Harlan Community Middle SchoolA-
Middle · Grades 6–8 · 10.7 mi
H
Harlan High SchoolB+
High · Grades 9–12 · 10.7 mi
E
Harlan Primary School
Elementary · Grades PK–2 · 10.8 mi

District: Harlan Community School District

Neighborhood · ZIP 51565These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.19

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.452
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.10 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,664
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$84,993
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.33 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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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

128 1100th 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 78% of homes in Shelby County
  • Bigger than 80% of homes in Portsmouth 51565
  • Among the largest lots in Portsmouth 51565

What homes are worth in Portsmouth 51565

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

This home
$76K$511K

This home is worth more than 65% of homes in Portsmouth 51565.

How it measures up in Portsmouth 51565

The dot is this home. The mark in the middle is the typical home in Portsmouth 51565.

Estimated value$290,029
CheaperTypical $234,705Pricier

Pricier than 65% of homes nearby

Price per ft²$148
CheaperTypical $151Pricier

Pricier than 48% of homes nearby

Living area1,954 ft²
SmallerTypical 1,560 ft²Bigger

Bigger than 80% of homes nearby

Lot size40 ac
SmallerTypical 1.95 acBigger

Bigger than almost all homes nearby

Year built1920
OlderTypical 1948Newer

Newer than 43% of homes nearby

How 128 1100th St ranks against every home in each area.
MeasureThis homePortsmouth 51565Shelby County
Estimated valuepricier than$290,02965% of homes78% of homes
Price per ft²pricier than$14848% of homes62% of homes
Living areabigger than1,954 ft²80% of homes77% of homes
Lot sizebigger than40 acalmost all homesalmost all homes
Year builtnewer than192043% of homes40% of homes

About 128 1100th St

How much is 128 1100th St, Portsmouth, IA worth?

The TopHap Estimate for 128 1100th St, Portsmouth, IA is $290,029 as of Sep 24, 2026. The likely range is $224,506 to $355,552. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 128 1100th St, Portsmouth, IA last sell?

128 1100th St, Portsmouth, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 128 1100th St, Portsmouth, IA?

128 1100th St, Portsmouth, IA has 5 bedrooms, 1 bathrooms, 1,954 square feet of living space and a 40.00-acre lot.

When was 128 1100th St, Portsmouth, IA built?

128 1100th St, Portsmouth, IA was built in 1920, making it 106 years old. The building has 2 stories.

What schools serve 128 1100th St, Portsmouth, IA?

128 1100th St, Portsmouth, IA is assigned to Harlan Community Middle School (middle), rated A-; Harlan High School (high), rated B+; Harlan Primary School (elementary). All sit in Harlan Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 128 1100th St, Portsmouth, IA compare to other homes in Portsmouth 51565?

Among the 234 homes in Portsmouth 51565, it is worth more than 65% of them ($290,029 against a typical $234,705), its price per square foot is higher than 48% of them ($148 against a typical $151), it is bigger than 80% of them (1,954 ft² against a typical 1,560 ft²), its lot is bigger than almost all of them (40 ac against a typical 1.95 ac) and it is newer than 43% of them (1920 against a typical 1948). Measured against all of Shelby County, it is worth more than 78% 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 128 1100th St, Portsmouth, IA?

The 2026 property tax bill for 128 1100th St, Portsmouth, IA was $3,676. The county assessed it at $270,171.

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