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Single Family ResidenceResidential
$862,844$343 / 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 93How 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 $715,000 on Aug 8, 2023

321 UNION AVE

SWARTHMORE, PA 19081
5
Beds
2
Baths
2,517 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.
0.36 ac
Lot SizeThe size of the land the home sits on, from county records.
1928
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
11
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$863K
$801K low$925K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$715,000 · Aug 8, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,486 (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.$345,440 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$121,920
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$223,520
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$345,440
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$345,440

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.0.36
ConstructionThe main material the home's frame and walls are built from.Stone
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

Transaction History(3)

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
Swarthmore-rutledge SchoolA+
Elementary · Grades KG–5 · 0.6 mi
M
Strath Haven Middle SchoolA+
Middle · Grades 6–8 · 1.4 mi
H
Strath Haven High SchoolA
High · Grades 9–12 · 1.4 mi

District: Wallingford-Swarthmore School District

Neighborhood · ZIP 19081These 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.60
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.76

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
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.11,528
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,245 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,187
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$160,591
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

321 Union 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 88% of homes in Delaware County
  • Costs more per square foot than 87% of homes in Delaware County
  • Bigger than 80% of homes in Delaware County
  • Has a bigger lot than 82% of homes in Delaware County
  • Older than 81% of homes in Delaware County

What homes are worth in Swarthmore 19081

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

This home
$150K$1.4M

This home is worth more than 79% of homes in Swarthmore 19081.

How it measures up in Swarthmore 19081

The dot is this home. The mark in the middle is the typical home in Swarthmore 19081.

Estimated value$862,844
CheaperTypical $573,724Pricier

Pricier than 79% of homes nearby

Price per ft²$343
CheaperTypical $283Pricier

Pricier than 81% of homes nearby

Living area2,517 ft²
SmallerTypical 1,806 ft²Bigger

Bigger than 74% of homes nearby

Lot size0.36 ac
SmallerTypical 0.22 acBigger

Bigger than 81% of homes nearby

Year built1928
OlderTypical 1952Newer

Newer than 24% of homes nearby

How 321 Union Ave ranks against every home in each area.
MeasureThis homeSwarthmoreSwarthmore 19081Delaware County
Estimated valuepricier than$862,84469% of homes79% of homes88% of homes
Price per ft²pricier than$34373% of homes81% of homes87% of homes
Living areabigger than2,517 ft²60% of homes74% of homes80% of homes
Lot sizebigger than0.36 ac72% of homes81% of homes82% of homes
Year builtnewer than192840% of homes24% of homes19% of homes

About 321 Union Ave

How much is 321 Union Ave, Swarthmore, PA worth?

The TopHap Estimate for 321 Union Ave, Swarthmore, PA is $862,844 as of Jul 14, 2026. The likely range is $800,521 to $925,167. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 321 Union Ave, Swarthmore, PA last sell?

321 Union Ave, Swarthmore, PA last sold on Aug 8, 2023 for $715,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 321 Union Ave, Swarthmore, PA?

321 Union Ave, Swarthmore, PA has 5 bedrooms, 2 bathrooms, 2,517 square feet of living space and a 0.36-acre lot.

When was 321 Union Ave, Swarthmore, PA built?

321 Union Ave, Swarthmore, PA was built in 1928, making it 98 years old. The building has 2 stories.

What schools serve 321 Union Ave, Swarthmore, PA?

321 Union Ave, Swarthmore, PA is assigned to Swarthmore-rutledge School (elementary), rated A+; Strath Haven Middle School (middle), rated A+; Strath Haven High School (high), rated A. All sit in Wallingford-Swarthmore School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 321 Union Ave, Swarthmore, PA compare to other homes in Swarthmore 19081?

Among the 3,261 homes in Swarthmore 19081, it is worth more than 79% of them ($862,844 against a typical $573,724), its price per square foot is higher than 81% of them ($343 against a typical $283), it is bigger than 74% of them (2,517 ft² against a typical 1,806 ft²), its lot is bigger than 81% of them (0.36 ac against a typical 0.22 ac) and it is newer than 24% of them (1928 against a typical 1952). Measured against all of Delaware County, it is worth more than 88% 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 321 Union Ave, Swarthmore, PA?

The 2026 property tax bill for 321 Union Ave, Swarthmore, PA was $13,486. The county assessed it at $345,440.

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