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Single Family ResidenceResidential
$360,256$181 / 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

1433 S KEYSTONE AVE

UPPER DARBY, PA 19082
3
Beds
2
Baths
1,991 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.
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$360K
$343K low$377K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,398 (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.$144,050 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$39,720
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$104,330
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$144,050
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$144,050

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDELAWARE
Lot (acres)The size of the land the home sits on, from county records.0.12
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Beverly Hills Middle SchoolC-
Middle · Grades 6–8 · 0.4 mi
H
Upper Darby High SchoolD+
High · Grades 9–12 · 0.5 mi
E
Hillcrest Elementary SchoolC
Elementary · Grades KG–5 · 1.2 mi

District: Upper Darby School District

Neighborhood · ZIP 19082These 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.115
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.78

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.17%
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.41,135
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.16,040 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$59,070
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$74,967
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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

1433 S Keystone Ave 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 92% of homes in Upper Darby 19082
  • Costs more per square foot than 80% of homes in Upper Darby 19082
  • Bigger than 91% of homes in Upper Darby 19082
  • Has a bigger lot than 86% of homes in Upper Darby 19082
  • Older than 75% of homes in Delaware County

What homes are worth in Upper Darby 19082

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

This home
$60K$421K

This home is worth more than 92% of homes in Upper Darby 19082.

How it measures up in Upper Darby 19082

The dot is this home. The mark in the middle is the typical home in Upper Darby 19082.

Estimated value$360,256
CheaperTypical $186,513Pricier

Pricier than 92% of homes nearby

Price per ft²$181
CheaperTypical $152Pricier

Pricier than 80% of homes nearby

Living area1,991 ft²
SmallerTypical 1,288 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.12 ac
SmallerTypical 1,786 ft²Bigger

Bigger than 86% of homes nearby

Year built1930
OlderTypical 1929Newer

Newer than 61% of homes nearby

How 1433 S Keystone Ave ranks against every home in each area.
MeasureThis homeUpper Darby 19082Delaware County
Estimated valuepricier than$360,25692% of homes40% of homes
Price per ft²pricier than$18180% of homes25% of homes
Living areabigger than1,991 ft²91% of homes67% of homes
Lot sizebigger than0.12 ac86% of homes41% of homes
Year builtnewer than193061% of homes25% of homes

About 1433 S Keystone Ave

How much is 1433 S Keystone Ave, Upper Darby, PA worth?

The TopHap Estimate for 1433 S Keystone Ave, Upper Darby, PA is $360,256 as of Sep 24, 2026. The likely range is $343,260 to $377,252. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1433 S Keystone Ave, Upper Darby, PA last sell?

1433 S Keystone Ave, Upper Darby, PA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 1433 S Keystone Ave, Upper Darby, PA?

1433 S Keystone Ave, Upper Darby, PA has 3 bedrooms, 2 bathrooms, 1,991 square feet of living space and a 0.12-acre lot.

When was 1433 S Keystone Ave, Upper Darby, PA built?

1433 S Keystone Ave, Upper Darby, PA was built in 1930, making it 96 years old. The building has 2 stories.

What schools serve 1433 S Keystone Ave, Upper Darby, PA?

1433 S Keystone Ave, Upper Darby, PA is assigned to Beverly Hills Middle School (middle), rated C-; Upper Darby High School (high), rated D+; Hillcrest Elementary School (elementary), rated C. All sit in Upper Darby School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1433 S Keystone Ave, Upper Darby, PA compare to other homes in Upper Darby 19082?

Among the 11,486 homes in Upper Darby 19082, it is worth more than 92% of them ($360,256 against a typical $186,513), its price per square foot is higher than 80% of them ($181 against a typical $152), it is bigger than 91% of them (1,991 ft² against a typical 1,288 ft²), its lot is bigger than 86% of them (0.12 ac against a typical 1,786 ft²) and it is newer than 61% of them (1930 against a typical 1929). Measured against all of Delaware County, it is worth more than 40% 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 1433 S Keystone Ave, Upper Darby, PA?

The 2026 property tax bill for 1433 S Keystone Ave, Upper Darby, PA was $6,398. The county assessed it at $144,050.

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