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Single Family ResidenceResidential
$100,897$76 / 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 Aug 30, 2026

840 PROSPECT ST

LAMONT, IA 50650
3
Beds
1.5
Baths
1,328 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.
0.3 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$101K
$77K low$125K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$754 (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.$69,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,920
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$61,680
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$56,920
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$69,600

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.10 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.minimal

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
StyleThe architectural style of the home, such as ranch or colonial.A-Frame
CountyBUCHANAN
Lot (acres)The size of the land the home sits on, from county records.0.30
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
Starmont Elementary SchoolC-
Elementary · Grades PK–5 · 6.0 mi
M
Starmont Middle SchoolB-
Middle · Grades 6–8 · 6.0 mi
H
Starmont High SchoolB-
High · Grades 9–12 · 6.0 mi

District: Starmont Community School District

Neighborhood · ZIP 50650These 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.134
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.79
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.17

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.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.450
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.$65,450
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,523
Average tempThe average temperature here across a full year.46°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%

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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

840 Prospect 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 89% of homes in Buchanan County
  • Costs less per square foot than 90% of homes in Buchanan County
  • Smaller than 66% of homes in Lamont 50650
  • Has a smaller lot than 73% of homes in Lamont 50650
  • Older than 80% of homes in Buchanan County

What homes are worth in Lamont 50650

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

This home
$39K$388K

This home is worth more than 33% of homes in Lamont 50650.

How it measures up in Lamont 50650

The dot is this home. The mark in the middle is the typical home in Lamont 50650.

Estimated value$100,897
CheaperTypical $131,959Pricier

Pricier than 33% of homes nearby

Price per ft²$76
CheaperTypical $95Pricier

Pricier than 35% of homes nearby

Living area1,328 ft²
SmallerTypical 1,556 ft²Bigger

Bigger than 34% of homes nearby

Lot size0.3 ac
SmallerTypical 0.63 acBigger

Bigger than 27% of homes nearby

Year built1900
OlderTypical 1920Newer

Newer than 32% of homes nearby

How 840 Prospect St ranks against every home in each area.
MeasureThis homeLamont 50650Buchanan County
Estimated valuepricier than$100,89733% of homes11% of homes
Price per ft²pricier than$7635% of homes10% of homes
Living areabigger than1,328 ft²34% of homes42% of homes
Lot sizebigger than0.3 ac27% of homes39% of homes
Year builtnewer than190032% of homes20% of homes

About 840 Prospect St

How much is 840 Prospect St, Lamont, IA worth?

The TopHap Estimate for 840 Prospect St, Lamont, IA is $100,897 as of Aug 30, 2026. The likely range is $76,629 to $125,165. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 840 Prospect St, Lamont, IA last sell?

840 Prospect St, Lamont, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 840 Prospect St, Lamont, IA?

840 Prospect St, Lamont, IA has 3 bedrooms, 1.5 bathrooms, 1,328 square feet of living space and a 0.30-acre lot.

When was 840 Prospect St, Lamont, IA built?

840 Prospect St, Lamont, IA was built in 1900, making it 126 years old. It is a a-frame home. The building has 2 stories.

What schools serve 840 Prospect St, Lamont, IA?

840 Prospect St, Lamont, IA is assigned to Starmont Elementary School (elementary), rated C-; Starmont Middle School (middle), rated B-; Starmont High School (high), rated B-. All sit in Starmont Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 840 Prospect St, Lamont, IA compare to other homes in Lamont 50650?

Among the 346 homes in Lamont 50650, it is worth more than 33% of them ($100,897 against a typical $131,959), its price per square foot is higher than 35% of them ($76 against a typical $95), it is bigger than 34% of them (1,328 ft² against a typical 1,556 ft²), its lot is bigger than 27% of them (0.3 ac against a typical 0.63 ac) and it is newer than 32% of them (1900 against a typical 1920). Measured against all of Buchanan County, it is worth more than 11% 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 840 Prospect St, Lamont, IA?

The 2025 property tax bill for 840 Prospect St, Lamont, IA was $754. The county assessed it at $69,600.

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