Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$131,802$119 / 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 76How 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
Last sold for $115,000 on Jan 31, 2025

309 MARSTON ST

COULTER, IA 50431
3
Beds
1.5
Baths
1,104 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$132K
$100K low$163K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$115,000 · Jan 31, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,066 (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.$70,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$65,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$66,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$70,900

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyFRANKLIN
Lot (acres)The size of the land the home sits on, from county records.0.24
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
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.DeckPatio · 384 ft²Porch · 28 ft²

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

E
Cal Elementary SchoolA-
Elementary · Grades PK–6 · 1.2 mi

District: Cal Community School District

Neighborhood · ZIP 50431These 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.110
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.10

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.86%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.1
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$76,020
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$87,255
Average tempThe average temperature here across a full year.46°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.61%

Owner Tools

Do you own this home?
Claim this home

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

309 Marston 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 83% of homes in Coulter 50431
  • Costs more per square foot than 97% of homes in Coulter 50431
  • Smaller than 78% of homes in Franklin County

What homes are worth in Coulter 50431

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

This home
$24K$197K

This home is worth more than 83% of homes in Coulter 50431.

How it measures up in Coulter 50431

The dot is this home. The mark in the middle is the typical home in Coulter 50431.

Estimated value$131,802
CheaperTypical $79,585Pricier

Pricier than 83% of homes nearby

Price per ft²$119
CheaperTypical $66Pricier

Pricier than 97% of homes nearby

Living area1,104 ft²
SmallerTypical 1,254 ft²Bigger

Bigger than 33% of homes nearby

Lot size0.24 ac
SmallerTypical 0.29 acBigger

Bigger than 43% of homes nearby

Year built1930
OlderTypical 1930Newer

Newer than 52% of homes nearby

How 309 Marston St ranks against every home in each area.
MeasureThis homeCoulter 50431Franklin County
Estimated valuepricier than$131,80283% of homes52% of homes
Price per ft²pricier than$11997% of homes73% of homes
Living areabigger than1,104 ft²33% of homes22% of homes
Lot sizebigger than0.24 ac43% of homes40% of homes
Year builtnewer than193052% of homes47% of homes

About 309 Marston St

How much is 309 Marston St, Coulter, IA worth?

The TopHap Estimate for 309 Marston St, Coulter, IA is $131,802 as of Sep 24, 2026. The likely range is $100,419 to $163,185. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 309 Marston St, Coulter, IA last sell?

309 Marston St, Coulter, IA last sold on Jan 31, 2025 for $115,000, according to the county's recorded deed.

How big is 309 Marston St, Coulter, IA?

309 Marston St, Coulter, IA has 3 bedrooms, 1.5 bathrooms, 1,104 square feet of living space and a 0.24-acre lot.

When was 309 Marston St, Coulter, IA built?

309 Marston St, Coulter, IA was built in 1930, making it 96 years old. The building has 1 story.

What schools serve 309 Marston St, Coulter, IA?

309 Marston St, Coulter, IA is assigned to Cal Elementary School (elementary), rated A-. All sit in Cal Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 309 Marston St, Coulter, IA compare to other homes in Coulter 50431?

Among the 109 homes in Coulter 50431, it is worth more than 83% of them ($131,802 against a typical $79,585), its price per square foot is higher than 97% of them ($119 against a typical $66), it is bigger than 33% of them (1,104 ft² against a typical 1,254 ft²), its lot is bigger than 43% of them (0.24 ac against a typical 0.29 ac) and it is newer than 52% of them (1930 against a typical 1930). Measured against all of Franklin County, it is worth more than 52% 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 309 Marston St, Coulter, IA?

The 2025 property tax bill for 309 Marston St, Coulter, IA was $1,066. The county assessed it at $70,900.

More homes on Marston St

Closest homes

More homes in Coulter 50431

Assigned schools

Explore the area

See this home in context

Open 309 Marston St 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