Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$496,504$183 / 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 98How 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 $450,000 on Sep 21, 2021

12 ROSEMONT AVE

RIDLEY PARK, PA 19078
4
Beds
2.5
Baths
2,715 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.
0.3 ac
Lot SizeThe size of the land the home sits on, from county records.
1890
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$497K
$485K low$508K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$450,000 · Sep 21, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,437 (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.$287,030 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$64,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$222,730
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$287,030
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$287,030

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.0.30
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(2)

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
Lakeview Elementary SchoolB-
Elementary · Grades KG–5 · 0.3 mi
M
Ridley Middle SchoolD+
Middle · Grades 6–8 · 0.3 mi
H
Ridley High SchoolC+
High · Grades 9–12 · 1.3 mi

District: Ridley School District

Neighborhood · ZIP 19078These 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.89
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.75

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.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.10,786
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,214 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$91,053
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,869
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%

Owner Tools

Do you own this home?
Claim this home

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

12 Rosemont 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 95% of homes in Ridley Park 19078
  • Costs less per square foot than 87% of homes in Ridley Park 19078
  • Bigger than 95% of homes in Ridley Park 19078
  • Has a bigger lot than 95% of homes in Ridley Park 19078
  • Among the oldest homes in Delaware County

What homes are worth in Ridley Park 19078

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

This home
$158K$530K

This home is worth more than 95% of homes in Ridley Park 19078.

How it measures up in Ridley Park 19078

The dot is this home. The mark in the middle is the typical home in Ridley Park 19078.

Estimated value$496,504
CheaperTypical $372,456Pricier

Pricier than 95% of homes nearby

Price per ft²$183
CheaperTypical $234Pricier

Pricier than 13% of homes nearby

Living area2,715 ft²
SmallerTypical 1,345 ft²Bigger

Bigger than 95% of homes nearby

Lot size0.3 ac
SmallerTypical 0.11 acBigger

Bigger than 95% of homes nearby

Year built1890
OlderTypical 1953Newer

Newer than 2% of homes nearby

How 12 Rosemont Ave ranks against every home in each area.
MeasureThis homeRidley Park 19078Delaware County
Estimated valuepricier than$496,50495% of homes59% of homes
Price per ft²pricier than$18313% of homes26% of homes
Living areabigger than2,715 ft²95% of homes84% of homes
Lot sizebigger than0.3 ac95% of homes77% of homes
Year builtnewer than18902% of homesalmost no homes

About 12 Rosemont Ave

How much is 12 Rosemont Ave, Ridley Park, PA worth?

The TopHap Estimate for 12 Rosemont Ave, Ridley Park, PA is $496,504 as of Sep 24, 2026. The likely range is $484,925 to $508,083. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12 Rosemont Ave, Ridley Park, PA last sell?

12 Rosemont Ave, Ridley Park, PA last sold on Sep 21, 2021 for $450,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 12 Rosemont Ave, Ridley Park, PA?

12 Rosemont Ave, Ridley Park, PA has 4 bedrooms, 2.5 bathrooms, 2,715 square feet of living space and a 0.30-acre lot.

When was 12 Rosemont Ave, Ridley Park, PA built?

12 Rosemont Ave, Ridley Park, PA was built in 1890, making it 136 years old. The building has 2 stories.

What schools serve 12 Rosemont Ave, Ridley Park, PA?

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

How does 12 Rosemont Ave, Ridley Park, PA compare to other homes in Ridley Park 19078?

Among the 3,714 homes in Ridley Park 19078, it is worth more than 95% of them ($496,504 against a typical $372,456), its price per square foot is higher than 13% of them ($183 against a typical $234), it is bigger than 95% of them (2,715 ft² against a typical 1,345 ft²), its lot is bigger than 95% of them (0.3 ac against a typical 0.11 ac) and it is newer than 2% of them (1890 against a typical 1953). Measured against all of Delaware County, it is worth more than 59% 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 12 Rosemont Ave, Ridley Park, PA?

The 2026 property tax bill for 12 Rosemont Ave, Ridley Park, PA was $11,437. The county assessed it at $287,030.

More homes on Rosemont Ave

Closest homes

More homes in Ridley Park 19078

Assigned schools

Explore the area

See this home in context

Open 12 Rosemont Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map