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Single Family ResidenceResidential
$276,252$127 / 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 Jul 14, 2026

21 RIDLEY AVE

ALDAN, PA 19018
3
Beds
1
Baths
2,168 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1923
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

$276K
$254K low$299K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,525 (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.$154,510 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$42,290
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$112,220
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$154,510
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$154,510

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDELAWARE
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1989
Lot (acres)The size of the land the home sits on, from county records.0.17
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(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
Aldan Elementary SchoolB-
Elementary · Grades KG–6 · 0.4 mi
M
Penn Wood Middle SchoolD+
Middle · Grades 7–8 · 1.9 mi
H
Penn Wood High SchoolC-
High · Grades 9–12 · 2.2 mi

District: William Penn School District

Neighborhood · ZIP 19018These 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.117
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.77

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.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.23,393
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,641 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$75,165
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$91,956
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%

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

21 Ridley 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 less than 72% of homes in Delaware County
  • Costs less per square foot than 97% of homes in Clifton Heights 19018
  • Bigger than 93% of homes in Clifton Heights 19018
  • Has a bigger lot than 81% of homes in Clifton Heights 19018
  • Older than 91% of homes in Clifton Heights 19018

What homes are worth in Clifton Heights 19018

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

This home
$134K$434K

This home is worth more than 51% of homes in Clifton Heights 19018.

How it measures up in Clifton Heights 19018

The dot is this home. The mark in the middle is the typical home in Clifton Heights 19018.

Estimated value$276,252
CheaperTypical $274,439Pricier

Pricier than 51% of homes nearby

Price per ft²$127
CheaperTypical $200Pricier

Pricier than 3% of homes nearby

Living area2,168 ft²
SmallerTypical 1,331 ft²Bigger

Bigger than 93% of homes nearby

Lot size0.17 ac
SmallerTypical 0.11 acBigger

Bigger than 81% of homes nearby

Year built1923
OlderTypical 1949Newer

Newer than 9% of homes nearby

How 21 Ridley Ave ranks against every home in each area.
MeasureThis homeAldanClifton Heights 19018Delaware County
Estimated valuepricier than$276,25233% of homes51% of homes28% of homes
Price per ft²pricier than$1278% of homes3% of homes8% of homes
Living areabigger than2,168 ft²88% of homes93% of homes72% of homes
Lot sizebigger than0.17 ac72% of homes81% of homes56% of homes
Year builtnewer than192315% of homes9% of homes12% of homes

About 21 Ridley Ave

How much is 21 Ridley Ave, Aldan, PA worth?

The TopHap Estimate for 21 Ridley Ave, Aldan, PA is $276,252 as of Jul 14, 2026. The likely range is $253,624 to $298,880. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Ridley Ave, Aldan, PA last sell?

21 Ridley Ave, Aldan, PA last sold on Nov 18, 1985, according to the county's recorded deed.

How big is 21 Ridley Ave, Aldan, PA?

21 Ridley Ave, Aldan, PA has 3 bedrooms, 1 bathrooms, 2,168 square feet of living space and a 0.17-acre lot.

When was 21 Ridley Ave, Aldan, PA built?

21 Ridley Ave, Aldan, PA was built in 1923, making it 103 years old. The building has 2 stories.

What schools serve 21 Ridley Ave, Aldan, PA?

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

How does 21 Ridley Ave, Aldan, PA compare to other homes in Clifton Heights 19018?

Among the 7,377 homes in Clifton Heights 19018, it is worth more than 51% of them ($276,252 against a typical $274,439), its price per square foot is higher than 3% of them ($127 against a typical $200), it is bigger than 93% of them (2,168 ft² against a typical 1,331 ft²), its lot is bigger than 81% of them (0.17 ac against a typical 0.11 ac) and it is newer than 9% of them (1923 against a typical 1949). Measured against all of Delaware County, it is worth more than 28% 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 21 Ridley Ave, Aldan, PA?

The 2026 property tax bill for 21 Ridley Ave, Aldan, PA was $6,525. The county assessed it at $154,510.

More homes on Ridley Ave

Closest homes

More homes in Aldan 19018

Assigned schools

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