Skip to content
Skip to content
TopHapOpen in map
Rural ResidenceResidential
$432,775$170 / 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 87How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

20913 WALNUT AVE

SHELL ROCK, IA 50670
6
Beds
2
Baths
2,551 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.
13 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.
12
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

$433K
$378K low$487K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$167,775
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$134,220
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.59%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$265,000
VERIDIAN CU · recorded Oct 30, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,662 (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.$485,010 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,280
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$483,730
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$464,080
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$485,010

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.50
96
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
11
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
69
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
62
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
12
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.84 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.Rural Residence
CountyButler
Lot (acres)The size of the land the home sits on, from county records.13.00
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.Forced Air
CoolingThe type of cooling or air conditioning in the home.Yes
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 1,216 ft²Porch · 228 ft²

Transaction History(1)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

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

E
Shell Rock Elementary SchoolA
Elementary · Grades PK–4 · 2.6 mi
M
Waverly-Shell Rock Middle SchoolB+
Middle · Grades 5–8 · 5.6 mi
H
Waverly-Shell Rock Senior High SchoolA+
High · Grades 9–12 · 5.8 mi

District: Waverly-Shell Rock Community School District

Neighborhood · ZIP 50670These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
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.1,981
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.$80,862
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$91,558
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.35 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.61%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

20913 Walnut 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 more than 93% of homes in Butler County
  • Costs more per square foot than 74% of homes in Butler County
  • Bigger than 96% of homes in Shell Rock 50670
  • Has a bigger lot than 91% of homes in Shell Rock 50670
  • Newer than 84% of homes in Butler County

What homes are worth in Shell Rock 50670

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

This home
$77K$672K

This home is worth more than 84% of homes in Shell Rock 50670.

How it measures up in Shell Rock 50670

The dot is this home. The mark in the middle is the typical home in Shell Rock 50670.

Estimated value$432,775
CheaperTypical $252,739Pricier

Pricier than 84% of homes nearby

Price per ft²$170
CheaperTypical $182Pricier

Pricier than 42% of homes nearby

Living area2,551 ft²
SmallerTypical 1,426 ft²Bigger

Bigger than 96% of homes nearby

Lot size13 ac
SmallerTypical 0.46 acBigger

Bigger than 91% of homes nearby

Year built1998
OlderTypical 1965Newer

Newer than 82% of homes nearby

How 20913 Walnut Ave ranks against every home in each area.
MeasureThis homeShell Rock 50670Butler County
Estimated valuepricier than$432,77584% of homes93% of homes
Price per ft²pricier than$17042% of homes74% of homes
Living areabigger than2,551 ft²96% of homes96% of homes
Lot sizebigger than13 ac91% of homes90% of homes
Year builtnewer than199882% of homes84% of homes

About 20913 Walnut Ave

How much is 20913 Walnut Ave, Shell Rock, IA worth?

The TopHap Estimate for 20913 Walnut Ave, Shell Rock, IA is $432,775 as of Jul 14, 2026. The likely range is $378,329 to $487,221. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 20913 Walnut Ave, Shell Rock, IA?

20913 Walnut Ave, Shell Rock, IA has 6 bedrooms, 2 bathrooms, 2,551 square feet of living space and a 13.00-acre lot.

When was 20913 Walnut Ave, Shell Rock, IA built?

20913 Walnut Ave, Shell Rock, IA was built in 1998, making it 28 years old. The building has 1 story.

What schools serve 20913 Walnut Ave, Shell Rock, IA?

20913 Walnut Ave, Shell Rock, IA is assigned to Shell Rock Elementary School (elementary), rated A; Waverly-Shell Rock Middle School (middle), rated B+; Waverly-Shell Rock Senior High School (high), rated A+. All sit in Waverly-Shell Rock Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20913 Walnut Ave, Shell Rock, IA compare to other homes in Shell Rock 50670?

Among the 879 homes in Shell Rock 50670, it is worth more than 84% of them ($432,775 against a typical $252,739), its price per square foot is higher than 42% of them ($170 against a typical $182), it is bigger than 96% of them (2,551 ft² against a typical 1,426 ft²), its lot is bigger than 91% of them (13 ac against a typical 0.46 ac) and it is newer than 82% of them (1998 against a typical 1965). Measured against all of Butler County, it is worth more than 93% 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 20913 Walnut Ave, Shell Rock, IA?

The 2024 property tax bill for 20913 Walnut Ave, Shell Rock, IA was $5,662. The county assessed it at $485,010.

Closest homes

More homes in Shell Rock 50670

Assigned schools

Explore the area

See this home in context

Open 20913 Walnut Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map