Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$786,277$246 / 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 Sep 24, 2026
Last sold for $210,700 on Sep 1, 1991

821 WILLIAM THOMAS DR

KENNETT SQUARE, PA 19348
4
Beds
3.5
Baths
3,195 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.
1 ac
Lot SizeThe size of the land the home sits on, from county records.
1985
Year BuiltThe year the home was originally built, according to county records.
2
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$786K
$726K low$847K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$210,700 · Sep 1, 1991

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,447 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$240,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$54,890
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$185,810
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$240,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$240,700

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.54
39
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
18
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.
95
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
49
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.8 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.Contemporary
CountyCHESTER
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Electric
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Neighborhood

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
Unionville Elementary SchoolA-
Elementary · Grades KG–5 · 0.3 mi
M
Charles F. Patton Middle SchoolA+
Middle · Grades 6–8 · 0.7 mi
H
Unionville High SchoolA
High · Grades 9–12 · 0.8 mi

District: Unionville-Chadds Ford School District

Neighborhood · ZIP 19348These 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.90
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.83

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.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.24,379
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.635 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$120,766
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$162,168
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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

821 William Thomas Dr 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 77% of homes in Chester County
  • Bigger than 79% of homes in Chester County
  • Has a bigger lot than 76% of homes in Chester County

What homes are worth in Kennett Square 19348

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

This home
$290K$1.4M

This home is worth more than 73% of homes in Kennett Square 19348.

How it measures up in Kennett Square 19348

The dot is this home. The mark in the middle is the typical home in Kennett Square 19348.

Estimated value$786,277
CheaperTypical $610,246Pricier

Pricier than 73% of homes nearby

Price per ft²$246
CheaperTypical $252Pricier

Pricier than 45% of homes nearby

Living area3,195 ft²
SmallerTypical 2,453 ft²Bigger

Bigger than 71% of homes nearby

Lot size1 ac
SmallerTypical 0.45 acBigger

Bigger than 72% of homes nearby

Year built1985
OlderTypical 1988Newer

Newer than 46% of homes nearby

How 821 William Thomas Dr ranks against every home in each area.
MeasureThis homeKennett Square 19348Chester County
Estimated valuepricier than$786,27773% of homes77% of homes
Price per ft²pricier than$24645% of homes43% of homes
Living areabigger than3,195 ft²71% of homes79% of homes
Lot sizebigger than1 ac72% of homes76% of homes
Year builtnewer than198546% of homes52% of homes

About 821 William Thomas Dr

How much is 821 William Thomas Dr, Kennett Square, PA worth?

The TopHap Estimate for 821 William Thomas Dr, Kennett Square, PA is $786,277 as of Sep 24, 2026. The likely range is $725,983 to $846,571. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 821 William Thomas Dr, Kennett Square, PA last sell?

821 William Thomas Dr, Kennett Square, PA last sold on Sep 1, 1991 for $210,700, according to the county's recorded deed.

How big is 821 William Thomas Dr, Kennett Square, PA?

821 William Thomas Dr, Kennett Square, PA has 4 bedrooms, 3.5 bathrooms and 3,195 square feet of living space.

When was 821 William Thomas Dr, Kennett Square, PA built?

821 William Thomas Dr, Kennett Square, PA was built in 1985, making it 41 years old. It is a contemporary home. The building has 2 stories.

What schools serve 821 William Thomas Dr, Kennett Square, PA?

821 William Thomas Dr, Kennett Square, PA is assigned to Unionville Elementary School (elementary), rated A-; Charles F. Patton Middle School (middle), rated A+; Unionville High School (high), rated A. All sit in Unionville-Chadds Ford School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 821 William Thomas Dr, Kennett Square, PA compare to other homes in Kennett Square 19348?

Among the 7,126 homes in Kennett Square 19348, it is worth more than 73% of them ($786,277 against a typical $610,246), its price per square foot is higher than 45% of them ($246 against a typical $252), it is bigger than 71% of them (3,195 ft² against a typical 2,453 ft²), its lot is bigger than 72% of them (1 ac against a typical 0.45 ac) and it is newer than 46% of them (1985 against a typical 1988). Measured against all of Chester County, it is worth more than 77% 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 821 William Thomas Dr, Kennett Square, PA?

The 2026 property tax bill for 821 William Thomas Dr, Kennett Square, PA was $1,447. The county assessed it at $240,700.

More homes on William Thomas Dr

Closest homes

More homes in Kennett Square 19348

Assigned schools

Explore the area

See this home in context

Open 821 William Thomas Dr 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