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Single Family ResidenceResidential
$230,476$110 / 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 81How 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

421 THATCHER AVE

DARBY, PA 19023
4
Beds
2.5
Baths
2,088 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.
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.

Valuation

$230K
$187K low$274K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,701 (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.$127,980 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$17,360
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$110,620
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$127,980
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$127,980

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.Conventional
CountyDELAWARE
Lot (acres)The size of the land the home sits on, from county records.0.15
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

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

E
Colwyn Elementary SchoolD+
Elementary · Grades KG–6 · 0.2 mi
M
Penn Wood Middle SchoolD-
Middle · Grades 7–8 · 0.6 mi
H
Penn Wood High SchoolD-
High · Grades 9–12 · 2.5 mi

District: William Penn School District

Neighborhood · ZIP 19023These 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.138
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.79

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.10%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.27%
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.22,855
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.11,478 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$56,669
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$67,129
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.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

421 Thatcher 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.

  • Among the most valuable homes in Colwyn
  • Costs less per square foot than 94% of homes in Delaware County
  • Bigger than 95% of homes in Darby 19023
  • Has a bigger lot than 96% of homes in Colwyn
  • Newer than 85% of homes in Darby 19023

What homes are worth in Darby 19023

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

This home
$81K$273K

This home is worth more than 92% of homes in Darby 19023.

How it measures up in Darby 19023

The dot is this home. The mark in the middle is the typical home in Darby 19023.

Estimated value$230,476
CheaperTypical $146,769Pricier

Pricier than 92% of homes nearby

Price per ft²$110
CheaperTypical $125Pricier

Pricier than 28% of homes nearby

Living area2,088 ft²
SmallerTypical 1,222 ft²Bigger

Bigger than 95% of homes nearby

Lot size0.15 ac
SmallerTypical 2,134 ft²Bigger

Bigger than 94% of homes nearby

Year built1950
OlderTypical 1932Newer

Newer than 85% of homes nearby

How 421 Thatcher Ave ranks against every home in each area.
MeasureThis homeColwynDarby 19023Delaware County
Estimated valuepricier than$230,476almost all homes92% of homes22% of homes
Price per ft²pricier than$11017% of homes28% of homes6% of homes
Living areabigger than2,088 ft²94% of homes95% of homes70% of homes
Lot sizebigger than0.15 ac96% of homes94% of homes51% of homes
Year builtnewer than195064% of homes85% of homes52% of homes

About 421 Thatcher Ave

How much is 421 Thatcher Ave, Darby, PA worth?

The TopHap Estimate for 421 Thatcher Ave, Darby, PA is $230,476 as of Sep 24, 2026. The likely range is $187,443 to $273,509. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Thatcher Ave, Darby, PA last sell?

421 Thatcher Ave, Darby, PA last sold on Sep 22, 1987, according to the county's recorded deed.

How big is 421 Thatcher Ave, Darby, PA?

421 Thatcher Ave, Darby, PA has 4 bedrooms, 2.5 bathrooms, 2,088 square feet of living space and a 0.15-acre lot.

When was 421 Thatcher Ave, Darby, PA built?

421 Thatcher Ave, Darby, PA was built in 1950, making it 76 years old. It is a conventional home. The building has 2 stories.

What schools serve 421 Thatcher Ave, Darby, PA?

421 Thatcher Ave, Darby, PA is assigned to Colwyn Elementary School (elementary), rated D+; Penn Wood Middle School (middle), rated D-; Penn Wood High School (high), rated D-. All sit in William Penn School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Thatcher Ave, Darby, PA compare to other homes in Darby 19023?

Among the 6,822 homes in Darby 19023, it is worth more than 92% of them ($230,476 against a typical $146,769), its price per square foot is higher than 28% of them ($110 against a typical $125), it is bigger than 95% of them (2,088 ft² against a typical 1,222 ft²), its lot is bigger than 94% of them (0.15 ac against a typical 2,134 ft²) and it is newer than 85% of them (1950 against a typical 1932). Measured against all of Delaware County, it is worth more than 22% 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 421 Thatcher Ave, Darby, PA?

The 2026 property tax bill for 421 Thatcher Ave, Darby, PA was $4,701. The county assessed it at $127,980.

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