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Single Family ResidenceResidential
$564,855$321 / 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 92How 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

10400 STATE ROUTE 521

SUNBURY, OH 43074
3
Beds
2
Baths
1,760 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.
5 ac
Lot SizeThe size of the land the home sits on, from county records.
1991
Year BuiltThe year the home was originally built, according to county records.
2
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.
7
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$565K
$518K low$612K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,772 (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.$143,050 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$40,010
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$103,040
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$143,050
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$408,700

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.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
17
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
71
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
89
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
25
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Conventional
CountyDelaware
Lot (acres)The size of the land the home sits on, from county records.5.00
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Shed · 160 ft²Patio · 250 ft²

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
Prairie Run Elementary SchoolA-
Elementary · Grades KG–4 · 4.3 mi
M
Big Walnut Middle SchoolA+
Middle · Grades 7–8 · 6.0 mi
H
Big Walnut High SchoolB
High · Grades 9–12 · 6.1 mi

District: Big Walnut Local School District

Neighborhood · ZIP 43074These 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.95
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.180
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.36

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.6%
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.16,152
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.184 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,276
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$127,200
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.49%

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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

10400 State Route 521 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 71% of homes in Sunbury 43074
  • Costs more per square foot than 90% of homes in Sunbury 43074
  • Smaller than 72% of homes in Delaware County
  • Has a bigger lot than 90% of homes in Delaware County
  • Older than 74% of homes in Delaware County

What homes are worth in Sunbury 43074

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

This home
$220K$951K

This home is worth more than 71% of homes in Sunbury 43074.

How it measures up in Sunbury 43074

The dot is this home. The mark in the middle is the typical home in Sunbury 43074.

Estimated value$564,855
CheaperTypical $483,019Pricier

Pricier than 71% of homes nearby

Price per ft²$321
CheaperTypical $233Pricier

Pricier than 90% of homes nearby

Living area1,760 ft²
SmallerTypical 2,050 ft²Bigger

Bigger than 35% of homes nearby

Lot size5 ac
SmallerTypical 1 acBigger

Bigger than 76% of homes nearby

Year built1991
OlderTypical 2001Newer

Newer than 35% of homes nearby

How 10400 State Route 521 ranks against every home in each area.
MeasureThis homeSunbury 43074Delaware County
Estimated valuepricier than$564,85571% of homes58% of homes
Price per ft²pricier than$32190% of homes90% of homes
Living areabigger than1,760 ft²35% of homes28% of homes
Lot sizebigger than5 ac76% of homes90% of homes
Year builtnewer than199135% of homes26% of homes

About 10400 State Route 521

How much is 10400 State Route 521, Sunbury, OH worth?

The TopHap Estimate for 10400 State Route 521, Sunbury, OH is $564,855 as of Aug 30, 2026. The likely range is $517,766 to $611,944. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 10400 State Route 521, Sunbury, OH last sell?

10400 State Route 521, Sunbury, OH last sold on Apr 21, 2004, according to the county's recorded deed.

How big is 10400 State Route 521, Sunbury, OH?

10400 State Route 521, Sunbury, OH has 3 bedrooms, 2 bathrooms, 1,760 square feet of living space and a 5.00-acre lot.

When was 10400 State Route 521, Sunbury, OH built?

10400 State Route 521, Sunbury, OH was built in 1991, making it 35 years old. It is a conventional home. The building has 2 stories.

What schools serve 10400 State Route 521, Sunbury, OH?

10400 State Route 521, Sunbury, OH is assigned to Prairie Run Elementary School (elementary), rated A-; Big Walnut Middle School (middle), rated A+; Big Walnut High School (high), rated B. All sit in Big Walnut Local School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 10400 State Route 521, Sunbury, OH compare to other homes in Sunbury 43074?

Among the 6,995 homes in Sunbury 43074, it is worth more than 71% of them ($564,855 against a typical $483,019), its price per square foot is higher than 90% of them ($321 against a typical $233), it is bigger than 35% of them (1,760 ft² against a typical 2,050 ft²), its lot is bigger than 76% of them (5 ac against a typical 1 ac) and it is newer than 35% of them (1991 against a typical 2001). Measured against all of Delaware County, it is worth more than 58% 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 10400 State Route 521, Sunbury, OH?

The 2025 property tax bill for 10400 State Route 521, Sunbury, OH was $5,772. The county assessed it at $143,050.

More homes on State Route 521

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Assigned schools

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