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Single Family ResidenceResidential
$84,307$54 / 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 60How 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

509 AUTUMN AVE

RIVERTON, IA 51650
4
Beds
1.5
Baths
1,574 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.
2.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1912
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$84K
$51K low$118K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,436 (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.$109,750 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$14,920
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$94,830
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$104,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$109,750

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.12 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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
CountyFREMONT
Lot (acres)The size of the land the home sits on, from county records.2.23
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.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, 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.DeckPorch · 184 ft²

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

E
Sidney Elementary SchoolA
Elementary · Grades PK–6 · 6.1 mi
M
Sidney High SchoolC
Middle · Grades 7–12 · 6.2 mi

District: Sidney Community School District

Neighborhood · ZIP 51650These 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.178
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.136
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.23

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
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.0.9%
PopulationHow many people live in this area.221
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.$65,215
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$86,252
Average tempThe average temperature here across a full year.51°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.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

509 Autumn Ave 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 76% of homes in Fremont County
  • Costs less per square foot than 87% of homes in Fremont County
  • Bigger than 71% of homes in Riverton 51650
  • Has a bigger lot than 81% of homes in Riverton 51650
  • Older than 70% of homes in Fremont County

What homes are worth in Riverton 51650

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

This home
$28K$262K

This home is worth more than 59% of homes in Riverton 51650.

How it measures up in Riverton 51650

The dot is this home. The mark in the middle is the typical home in Riverton 51650.

Estimated value$84,307
CheaperTypical $74,126Pricier

Pricier than 59% of homes nearby

Price per ft²$54
CheaperTypical $60Pricier

Pricier than 35% of homes nearby

Living area1,574 ft²
SmallerTypical 1,232 ft²Bigger

Bigger than 71% of homes nearby

Lot size2.23 ac
SmallerTypical 0.66 acBigger

Bigger than 81% of homes nearby

Year built1912
OlderTypical 1920Newer

Newer than 42% of homes nearby

How 509 Autumn Ave ranks against every home in each area.
MeasureThis homeRiverton 51650Fremont County
Estimated valuepricier than$84,30759% of homes24% of homes
Price per ft²pricier than$5435% of homes13% of homes
Living areabigger than1,574 ft²71% of homes61% of homes
Lot sizebigger than2.23 ac81% of homes69% of homes
Year builtnewer than191242% of homes30% of homes

About 509 Autumn Ave

How much is 509 Autumn Ave, Riverton, IA worth?

The TopHap Estimate for 509 Autumn Ave, Riverton, IA is $84,307 as of Aug 30, 2026. The likely range is $50,972 to $117,642. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Autumn Ave, Riverton, IA last sell?

509 Autumn Ave, Riverton, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 509 Autumn Ave, Riverton, IA?

509 Autumn Ave, Riverton, IA has 4 bedrooms, 1.5 bathrooms, 1,574 square feet of living space and a 2.23-acre lot.

When was 509 Autumn Ave, Riverton, IA built?

509 Autumn Ave, Riverton, IA was built in 1912, making it 114 years old. The building has 1 story.

What schools serve 509 Autumn Ave, Riverton, IA?

509 Autumn Ave, Riverton, IA is assigned to Sidney Elementary School (elementary), rated A; Sidney High School (middle), rated C. All sit in Sidney Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 Autumn Ave, Riverton, IA compare to other homes in Riverton 51650?

Among the 199 homes in Riverton 51650, it is worth more than 59% of them ($84,307 against a typical $74,126), its price per square foot is higher than 35% of them ($54 against a typical $60), it is bigger than 71% of them (1,574 ft² against a typical 1,232 ft²), its lot is bigger than 81% of them (2.23 ac against a typical 0.66 ac) and it is newer than 42% of them (1912 against a typical 1920). Measured against all of Fremont County, it is worth more than 24% 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 509 Autumn Ave, Riverton, IA?

The 2025 property tax bill for 509 Autumn Ave, Riverton, IA was $1,436. The county assessed it at $109,750.

More homes on Autumn Ave

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More homes in Riverton 51650

Assigned schools

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