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Single Family ResidenceResidential
$170,345$78 / 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 81How 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
Last sold for $90,000 on Sep 19, 2018

305 S UNION ST

ROCK RAPIDS, IA 51246
3
Beds
1.5
Baths
2,194 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.
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.
1918
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.

Valuation

$170K
$138K low$203K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$90,000 · Sep 19, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,892 (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.$155,760 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$29,250
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$126,510
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$134,240
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$155,760

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyLYON
Lot (acres)The size of the land the home sits on, from county records.0.31
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.None
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.Shed · 72 ft²Porch · 24 ft²

Transaction History(4)

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.

M
Central Lyon Secondary SchoolA+
Middle · Grades 7–12 · 0.7 mi
E
Central Lyon Elementary SchoolA
Elementary · Grades PK–6 · 0.8 mi

District: Central Lyon Community School District

Neighborhood · ZIP 51246These 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.125
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
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.94%
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.3.1%
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.4,544
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.28 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$73,023
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$90,712
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.27 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

305 S Union 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 66% of homes in Rock Rapids 51246
  • Costs less per square foot than 88% of homes in Rock Rapids 51246
  • Bigger than 86% of homes in Rock Rapids 51246
  • Older than 88% of homes in Rock Rapids 51246

What homes are worth in Rock Rapids 51246

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

This home
$67K$784K

This home is worth more than 34% of homes in Rock Rapids 51246.

How it measures up in Rock Rapids 51246

The dot is this home. The mark in the middle is the typical home in Rock Rapids 51246.

Estimated value$170,345
CheaperTypical $227,371Pricier

Pricier than 34% of homes nearby

Price per ft²$78
CheaperTypical $150Pricier

Pricier than 12% of homes nearby

Living area2,194 ft²
SmallerTypical 1,544 ft²Bigger

Bigger than 86% of homes nearby

Lot size0.31 ac
SmallerTypical 0.33 acBigger

Bigger than 46% of homes nearby

Year built1918
OlderTypical 1956Newer

Newer than 12% of homes nearby

How 305 S Union St ranks against every home in each area.
MeasureThis homeRock Rapids 51246Lyon County
Estimated valuepricier than$170,34534% of homes37% of homes
Price per ft²pricier than$7812% of homes14% of homes
Living areabigger than2,194 ft²86% of homes86% of homes
Lot sizebigger than0.31 ac46% of homes37% of homes
Year builtnewer than191812% of homes12% of homes

About 305 S Union St

How much is 305 S Union St, Rock Rapids, IA worth?

The TopHap Estimate for 305 S Union St, Rock Rapids, IA is $170,345 as of Aug 30, 2026. The likely range is $137,884 to $202,806. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 305 S Union St, Rock Rapids, IA last sell?

305 S Union St, Rock Rapids, IA last sold on Sep 19, 2018 for $90,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 305 S Union St, Rock Rapids, IA?

305 S Union St, Rock Rapids, IA has 3 bedrooms, 1.5 bathrooms, 2,194 square feet of living space and a 0.31-acre lot.

When was 305 S Union St, Rock Rapids, IA built?

305 S Union St, Rock Rapids, IA was built in 1918, making it 108 years old. It is a conventional home. The building has 1 story.

What schools serve 305 S Union St, Rock Rapids, IA?

305 S Union St, Rock Rapids, IA is assigned to Central Lyon Secondary School (middle), rated A+; Central Lyon Elementary School (elementary), rated A. All sit in Central Lyon Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 305 S Union St, Rock Rapids, IA compare to other homes in Rock Rapids 51246?

Among the 1,470 homes in Rock Rapids 51246, it is worth more than 34% of them ($170,345 against a typical $227,371), its price per square foot is higher than 12% of them ($78 against a typical $150), it is bigger than 86% of them (2,194 ft² against a typical 1,544 ft²), its lot is bigger than 46% of them (0.31 ac against a typical 0.33 ac) and it is newer than 12% of them (1918 against a typical 1956). Measured against all of Lyon County, it is worth more than 37% 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 305 S Union St, Rock Rapids, IA?

The 2025 property tax bill for 305 S Union St, Rock Rapids, IA was $1,892. The county assessed it at $155,760.

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