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Single Family ResidentialResidential
$92,560$105 / 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 91How 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 MAPLE ST

UNION STAR, MO 64494
2
Beds
1
Baths
884 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$93K
$84K low$101K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$650 (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.$7,760 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$970
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$6,790
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$6,870
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$40,849

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.42
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
43
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
73
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
54
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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 Residential
CountyDeKalb
Lot (acres)The size of the land the home sits on, from county records.0.50
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.Block (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

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.

M
Union Star High SchoolB+
Middle · Grades 6–12 · 0.3 mi
E
Union Star Elementary SchoolA+
Elementary · Grades KG–5 · 0.3 mi

District: Union Star R-Ii School District

Neighborhood · ZIP 64494These 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.148
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.124
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.20

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.90%
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.8.2%
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.666
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.11 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$66,989
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$77,266
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.37 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 Maple 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 96% of homes in DeKalb County
  • Costs less per square foot than 85% of homes in DeKalb County
  • Smaller than 92% of homes in DeKalb County
  • Has a smaller lot than 69% of homes in Union Star 64494
  • Older than 69% of homes in DeKalb County

What homes are worth in Union Star 64494

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

This home
$58K$653K

This home is worth more than 13% of homes in Union Star 64494.

How it measures up in Union Star 64494

The dot is this home. The mark in the middle is the typical home in Union Star 64494.

Estimated value$92,560
CheaperTypical $207,207Pricier

Pricier than 13% of homes nearby

Price per ft²$105
CheaperTypical $127Pricier

Pricier than 37% of homes nearby

Living area884 ft²
SmallerTypical 1,500 ft²Bigger

Bigger than 9% of homes nearby

Lot size0.5 ac
SmallerTypical 2.93 acBigger

Bigger than 31% of homes nearby

Year built1959
OlderTypical 1958Newer

Newer than 51% of homes nearby

How 840 Maple St ranks against every home in each area.
MeasureThis homeUnion Star 64494DeKalb County
Estimated valuepricier than$92,56013% of homes4% of homes
Price per ft²pricier than$10537% of homes15% of homes
Living areabigger than884 ft²9% of homes8% of homes
Lot sizebigger than0.5 ac31% of homes32% of homes
Year builtnewer than195951% of homes31% of homes

About 840 Maple St

How much is 840 Maple St, Union Star, MO worth?

The TopHap Estimate for 840 Maple St, Union Star, MO is $92,560 as of Aug 30, 2026. The likely range is $84,412 to $100,708. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 840 Maple St, Union Star, MO?

840 Maple St, Union Star, MO has 2 bedrooms, 1 bathrooms, 884 square feet of living space and a 0.50-acre lot.

When was 840 Maple St, Union Star, MO built?

840 Maple St, Union Star, MO was built in 1959, making it 67 years old. The building has 1 story.

What schools serve 840 Maple St, Union Star, MO?

840 Maple St, Union Star, MO is assigned to Union Star High School (middle), rated B+; Union Star Elementary School (elementary), rated A+. All sit in Union Star R-Ii School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 840 Maple St, Union Star, MO compare to other homes in Union Star 64494?

Among the 448 homes in Union Star 64494, it is worth more than 13% of them ($92,560 against a typical $207,207), its price per square foot is higher than 37% of them ($105 against a typical $127), it is bigger than 9% of them (884 ft² against a typical 1,500 ft²), its lot is bigger than 31% of them (0.5 ac against a typical 2.93 ac) and it is newer than 51% of them (1959 against a typical 1958). Measured against all of DeKalb County, it is worth more than 4% 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 Maple St, Union Star, MO?

The 2025 property tax bill for 840 Maple St, Union Star, MO was $650. The county assessed it at $7,760.

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