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Single Family ResidenceResidential
$208,536$141 / 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 82How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jun 23, 2026

509 330TH ST

LONE ROCK, IA 50559
3
Beds
1
Baths
1,475 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.
1.95 ac
Lot SizeThe size of the land the home sits on, from county records.
2007
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$209K
$171K low$246K 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.$68,536
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$54,829
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.67%
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.$140,000
NORTHWEST FSB · 6.5% 1 · recorded Aug 8, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,873 (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.$227,602 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$48,040
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$179,562
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$204,688
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$227,602

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.34
35
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
12
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
64
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
51
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
11
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.11 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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
CountyKOSSUTH
Lot (acres)The size of the land the home sits on, from county records.1.95
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.Yes
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, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
North Union Elementary SchoolA
Elementary · Grades PK–5 · 3.0 mi
M
North Union Middle SchoolB
Middle · Grades 6–8 · 9.9 mi
H
North Union High SchoolA-
High · Grades 9–12 · 12.7 mi

District: North Kossuth Community School District

Neighborhood · ZIP 50559These 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.132
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.14

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.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
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.471
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.12 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$62,459
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$78,938
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.31 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

509 330th 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 91% of homes in Lone Rock 50559
  • Costs more per square foot than 94% of homes in Lone Rock 50559
  • Has a bigger lot than 71% of homes in Kossuth County
  • Newer than 96% of homes in Lone Rock 50559

What homes are worth in Lone Rock 50559

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

This home
$31K$297K

This home is worth more than 91% of homes in Lone Rock 50559.

How it measures up in Lone Rock 50559

The dot is this home. The mark in the middle is the typical home in Lone Rock 50559.

Estimated value$208,536
CheaperTypical $93,981Pricier

Pricier than 91% of homes nearby

Price per ft²$141
CheaperTypical $65Pricier

Pricier than 94% of homes nearby

Living area1,475 ft²
SmallerTypical 1,456 ft²Bigger

Bigger than 51% of homes nearby

Lot size1.95 ac
SmallerTypical 1.7 acBigger

Bigger than 51% of homes nearby

Year built2007
OlderTypical 1932Newer

Newer than 96% of homes nearby

How 509 330th St ranks against every home in each area.
MeasureThis homeLone Rock 50559Kossuth County
Estimated valuepricier than$208,53691% of homes76% of homes
Price per ft²pricier than$14194% of homes77% of homes
Living areabigger than1,475 ft²51% of homes52% of homes
Lot sizebigger than1.95 ac51% of homes71% of homes
Year builtnewer than200796% of homes95% of homes

About 509 330th St

How much is 509 330th St, Lone Rock, IA worth?

The TopHap Estimate for 509 330th St, Lone Rock, IA is $208,536 as of Jun 23, 2026. The likely range is $170,999 to $246,072. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 330th St, Lone Rock, IA last sell?

509 330th St, Lone Rock, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 509 330th St, Lone Rock, IA?

509 330th St, Lone Rock, IA has 3 bedrooms, 1 bathrooms, 1,475 square feet of living space and a 1.95-acre lot.

When was 509 330th St, Lone Rock, IA built?

509 330th St, Lone Rock, IA was built in 2007, making it 19 years old. The building has 1 story.

What schools serve 509 330th St, Lone Rock, IA?

509 330th St, Lone Rock, IA is assigned to North Union Elementary School (elementary), rated A; North Union Middle School (middle), rated B; North Union High School (high), rated A-. All sit in North Kossuth Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 330th St, Lone Rock, IA compare to other homes in Lone Rock 50559?

Among the 173 homes in Lone Rock 50559, it is worth more than 91% of them ($208,536 against a typical $93,981), its price per square foot is higher than 94% of them ($141 against a typical $65), it is bigger than 51% of them (1,475 ft² against a typical 1,456 ft²), its lot is bigger than 51% of them (1.95 ac against a typical 1.7 ac) and it is newer than 96% of them (2007 against a typical 1932). Measured against all of Kossuth County, it is worth more than 76% 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 330th St, Lone Rock, IA?

The 2025 property tax bill for 509 330th St, Lone Rock, IA was $1,873. The county assessed it at $227,602.

Closest homes

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Assigned schools

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