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Single Family ResidenceResidential
$345,248$390 / 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 95How 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 $170,000 on May 1, 2008

433 WILLIAM ST

DOWNINGTOWN, PA 19335
2
Beds
1
Baths
886 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
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

$345K
$327K low$364K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$170,000 · May 1, 2008

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$455 (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.$99,510 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$35,980
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$63,530
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$99,510
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$99,510

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.Cape Cod
CountyCHESTER
Lot (acres)The size of the land the home sits on, from county records.0.15
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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
Beaver Creek Elementary SchoolA
Elementary · Grades KG–5 · 0.2 mi
H
Downingtown High School WestA
High · Grades 9–12 · 0.5 mi
M
Downingtown Middle SchoolB+
Middle · Grades 7–8 · 0.7 mi

District: Downingtown Area School District

Neighborhood · ZIP 19335These 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.61
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.81

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.38%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.53,396
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,255 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$134,311
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$159,194
Average tempThe average temperature here across a full year.52°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%

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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

433 William 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 91% of homes in Downingtown 19335
  • Costs more per square foot than 98% of homes in Downingtown 19335
  • Smaller than 98% of homes in Downingtown 19335
  • Has a smaller lot than 73% of homes in Chester County
  • Older than 91% of homes in Downingtown 19335

What homes are worth in Downingtown 19335

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

This home
$259K$1.1M

This home is worth more than 9% of homes in Downingtown 19335.

How it measures up in Downingtown 19335

The dot is this home. The mark in the middle is the typical home in Downingtown 19335.

Estimated value$345,248
CheaperTypical $582,235Pricier

Pricier than 9% of homes nearby

Price per ft²$390
CheaperTypical $251Pricier

Pricier than 98% of homes nearby

Living area886 ft²
SmallerTypical 2,213 ft²Bigger

Bigger than 2% of homes nearby

Lot size0.15 ac
SmallerTypical 0.29 acBigger

Bigger than 33% of homes nearby

Year built1950
OlderTypical 1989Newer

Newer than 9% of homes nearby

How 433 William St ranks against every home in each area.
MeasureThis homeDowningtown 19335Chester County
Estimated valuepricier than$345,2489% of homes12% of homes
Price per ft²pricier than$39098% of homes95% of homes
Living areabigger than886 ft²2% of homes2% of homes
Lot sizebigger than0.15 ac33% of homes27% of homes
Year builtnewer than19509% of homes16% of homes

About 433 William St

How much is 433 William St, Downingtown, PA worth?

The TopHap Estimate for 433 William St, Downingtown, PA is $345,248 as of Sep 24, 2026. The likely range is $326,584 to $363,912. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 433 William St, Downingtown, PA last sell?

433 William St, Downingtown, PA last sold on May 1, 2008 for $170,000, according to the county's recorded deed.

How big is 433 William St, Downingtown, PA?

433 William St, Downingtown, PA has 2 bedrooms, 1 bathrooms, 886 square feet of living space and a 0.15-acre lot.

When was 433 William St, Downingtown, PA built?

433 William St, Downingtown, PA was built in 1950, making it 76 years old. It is a cape cod home. The building has 1 story.

What schools serve 433 William St, Downingtown, PA?

433 William St, Downingtown, PA is assigned to Beaver Creek Elementary School (elementary), rated A; Downingtown High School West (high), rated A; Downingtown Middle School (middle), rated B+. All sit in Downingtown Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 433 William St, Downingtown, PA compare to other homes in Downingtown 19335?

Among the 18,549 homes in Downingtown 19335, it is worth more than 9% of them ($345,248 against a typical $582,235), its price per square foot is higher than 98% of them ($390 against a typical $251), it is bigger than 2% of them (886 ft² against a typical 2,213 ft²), its lot is bigger than 33% of them (0.15 ac against a typical 0.29 ac) and it is newer than 9% of them (1950 against a typical 1989). Measured against all of Chester County, it is worth more than 12% 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 433 William St, Downingtown, PA?

The 2026 property tax bill for 433 William St, Downingtown, PA was $455. The county assessed it at $99,510.

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