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Single Family ResidenceResidential
$440,348$182 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $409,000 on Aug 24, 2022

521 E RADISON RUN

CLAYTON, DE 19938
4
Beds
3 / 1
Baths
2,418 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
2006
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$440K
$426K low$455K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$409,000 · Aug 24, 2022
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$10,838
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$8,670
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.98%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$417,000
HUNTINGDON VALLEY BANK · recorded Aug 24, 2022
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$12,510
DELAWARE STATE HOUSING AUTHORITY

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,406 (2023)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$402,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$58,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$344,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$402,800

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.
23
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.
82
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.

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.Colonial
CountyKent
Lot (acres)The size of the land the home sits on, from county records.0.23
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
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, Finished
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.Porch · 192 ft²

Transaction History(2)

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
Clayton Elementary SchoolC-
Elementary · Grades KG–4 · 0.9 mi
H
Smyrna High SchoolA-
High · Grades 9–12 · 1.5 mi
M
Smyrna Middle SchoolC+
Middle · Grades 7–8 · 1.7 mi

District: Smyrna School District

Neighborhood · ZIP 19938These 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.78
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.44

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.97%
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.1.3%
PopulationHow many people live in this area.10,868
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.222 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,185
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,145
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.45 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.70%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

521 E Radison Run 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 73% of homes in Kent County
  • Costs less per square foot than 79% of homes in Clayton 19938
  • Bigger than 81% of homes in Kent County
  • Has a smaller lot than 77% of homes in Clayton 19938
  • Newer than 73% of homes in Kent County

What homes are worth in Clayton 19938

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

This home
$198K$663K

This home is worth more than 57% of homes in Clayton 19938.

How it measures up in Clayton 19938

The dot is this home. The mark in the middle is the typical home in Clayton 19938.

Estimated value$440,348
CheaperTypical $419,683Pricier

Pricier than 57% of homes nearby

Price per ft²$182
CheaperTypical $209Pricier

Pricier than 21% of homes nearby

Living area2,418 ft²
SmallerTypical 1,775 ft²Bigger

Bigger than 77% of homes nearby

Lot size0.23 ac
SmallerTypical 0.56 acBigger

Bigger than 23% of homes nearby

Year built2006
OlderTypical 2000Newer

Newer than 66% of homes nearby

How 521 E Radison Run ranks against every home in each area.
MeasureThis homeClayton 19938Kent County
Estimated valuepricier than$440,34857% of homes73% of homes
Price per ft²pricier than$18221% of homes29% of homes
Living areabigger than2,418 ft²77% of homes81% of homes
Lot sizebigger than0.23 ac23% of homes38% of homes
Year builtnewer than200666% of homes73% of homes

About 521 E Radison Run

How much is 521 E Radison Run, Clayton, DE worth?

The TopHap Estimate for 521 E Radison Run, Clayton, DE is $440,348 as of Jul 14, 2026. The likely range is $425,939 to $454,757. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 E Radison Run, Clayton, DE last sell?

521 E Radison Run, Clayton, DE last sold on Aug 24, 2022 for $409,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 521 E Radison Run, Clayton, DE?

521 E Radison Run, Clayton, DE has 4 bedrooms, 3 bathrooms, 2,418 square feet of living space and a 0.23-acre lot.

When was 521 E Radison Run, Clayton, DE built?

521 E Radison Run, Clayton, DE was built in 2006, making it 20 years old. It is a colonial home. The building has 2 stories.

What schools serve 521 E Radison Run, Clayton, DE?

521 E Radison Run, Clayton, DE is assigned to Clayton Elementary School (elementary), rated C-; Smyrna High School (high), rated A-; Smyrna Middle School (middle), rated C+. All sit in Smyrna School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 E Radison Run, Clayton, DE compare to other homes in Clayton 19938?

Among the 4,058 homes in Clayton 19938, it is worth more than 57% of them ($440,348 against a typical $419,683), its price per square foot is higher than 21% of them ($182 against a typical $209), it is bigger than 77% of them (2,418 ft² against a typical 1,775 ft²), its lot is bigger than 23% of them (0.23 ac against a typical 0.56 ac) and it is newer than 66% of them (2006 against a typical 2000). Measured against all of Kent County, it is worth more than 73% 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 521 E Radison Run, Clayton, DE?

The 2023 property tax bill for 521 E Radison Run, Clayton, DE was $1,406. The county assessed it at $402,800.

More homes on E Radison Run

Closest homes

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