Residential > House
Active
09/16/2025
List Price
$185,000$154/ft²
77 Keystone Ave
Upper Darby, PA 19082
- 3Beds
- 1Bath
- 1,200ft²Living Area
- 1,307ft²Lot Size
- -Pool
- -Car
- 1935Year Built
- 48DOM
- -Permit
77 Keystone Ave, Upper Darby, PA 19082 is a 3 bed, 1 bath, 1,200 ft² house built in 1935 on a 0.030 acre lot. This house is currently on the market for $185,000, and it was last sold in 2022 for $70,000. The latest TopHap estimate of the house's value is $108,570.
Property Valuations
Latest estimates for 77 Keystone Ave based on TopHap automated valuation model (AVM).
TopHap Estimate
$108,570
$86/ft²
-$76K below List Price
Updated 8 months ago
77 Keystone Ave is valued at $108,570 by TopHap AVM 8 months ago.
MLS Description
The listing agent's description. Original Listing
Upper Darby Duplex - Flexible Living & Investment Potential Discover this well-maintained duplex in the heart of Upper Darby, featuring two separate 1-bedroom, 1-bathroom apartments. Perfectly located just a short walk to local shops and the nearby SEPTA transportation hub, this property offers both convenience and accessibility. Each unit is move-in ready, making it an excellent option for an investor seeking strong rental potential or a first-time homebuyer looking to live in one unit while generating income from the other. The property also boasts a private backyard, ideal for gardening, entertaining, or simply relaxing under the shade of the established grapevine. With its prime location and versatile layout, this duplex presents a unique opportunity to create value, generate income, or enjoy as your own home. Don't miss your chance to explore the possibilities - contact me today to learn more or to schedule a private tour.
Listing Agents
The listing agent for 77 Keystone Ave is Thomas H McBride.
TH
Thomas H McBride
Keller Williams Real Estate -Exton
License: RS347374
Phone: (610) 363-4300
Current Ownership
Information about the current owner(s).
Taxes Billed
Taxes billed in 2025$3,548.36From latest Total Assessed Value4.38%Total Assessed Value$81,070=Land+
Assessed Value$19,890Additions
Assessed Value$61,180
In 2025, taxes billed for 77 Keystone Ave were $3,548.36, which is 4.38% from latest Total Assessed Value of $81,070.
Property History
77 Keystone Ave has undefined property events records (listings, deeds, permits, tax, foreclosure, loan).
Property Events
Environment
Environmental factors around 77 Keystone Ave
Hazard Risks
Wind205Tornado114Particulates113Weather111Hurricane101Nat'l Avg100Air Pollution99Ozone98Carb Mono92Hail85Earthquake78Lead66
12 hazards (Carbon Monoxide, Earthquake Risk, Hail Index, Tornado Index, Hurricane Index, Air Pollution Index, Ozone Index, Wind Index, Weather Risk, Lead Index, Particulate Matter, National Average) are above the national average around 77 Keystone Ave.
Walkability Index
14 /20
Most Walkable
20-18
Very Walkable
17-15
Somewhat Walkable
14-10
Car Dependent
9-0
77 Keystone Ave has a walkability score of 14 out of 20, which means that it is in a somewhat walkable area.
Temperature
Seasonal temperature sampled over multiple years
Winter
Average
Low
27°F
High
42°F
Summer
Average
Low
65°F
High
84°F
In the winter at 77 Keystone Ave, temperatures range from 26.95°F to 41.88°F with an average of 34.42°F. In the summer, the temperature ranges from 65.27°F to 84.46°F with and average of 74.87°F.
School Information
Public/private schools serving 77 Keystone Ave
Public Schools
Beverly Hills Middle School
Grades: 6-8
0.80 mi
C+
Upper Darby High School
Grades: 9-12
1.29 mi
C+
Charles Kelly Elementary School
Grades: 1-5
2.32 mi
C+
Kindergarten Center
Grades: KG-KG
0.60 mi
* The school rating is based entirely on the test score performance of each school. It is based on a scale of A-F, A being best.
Nearby public schools serving 77 Keystone Ave have ratings undefined, undefined, undefined, and undefined.
Neighborhood
This property is located in 19082.
Seasonal Housing units 19082
7%of housing is for seasonal rent.
Daytime Population for 19082
-23%of people during work hours.
Crime Index for 19082
121
121
The crime index in 19082 is 121, which is 1.2 times higher than national average.
Market Trends
Historical market data near 77 Keystone Ave over selected time period.
Nearby Properties on Keystone Ave
- 47 S Keystone Ave, Upper Darby, PA 19082 (Harwood Park) is a 1,598 square foot, 3 bedroom, 2.25 bathroom, 0.06 acre property. It was built in 1920 and has an estimate of $153,750 with a price per ft² of $96.
- 52 N Keystone Ave, Upper Darby, PA 19082 is a 956 square foot, 3 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $113,069 with a price per ft² of $118.
- 35 N Keystone Ave, Upper Darby, PA 19082 is a 1,302 square foot, 2 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $124,409 with a price per ft² of $96.
- 45 S Keystone Ave, Upper Darby, PA 19082 (Harwood Park) is a 1,598 square foot, 3 bedroom, 1 bathroom, 0.04 acre property. It was built in 1920 and has an estimate of $193,943 with a price per ft² of $121.
- 48 S Keystone Ave, Upper Darby, PA 19082 (Harwood Park) is a 1,598 square foot, 3 bedroom, 2.25 bathroom, 0.07 acre property. It was built in 1920 and has an estimate of $153,750 with a price per ft² of $96.
- 46 S Keystone Ave, Upper Darby, PA 19082 (Harwood Park) is a 1,465 square foot, 3 bedroom, 1 bathroom, 0.05 acre property. It was built in 1926 and has an estimate of $194,250 with a price per ft² of $133.
- 50 S Keystone Ave, Upper Darby, PA 19082 (Harwood Park) is a 1,708 square foot, 4 bedroom, 1 bathroom, 0.12 acre property. It was built in 1920 and has an estimate of $202,615 with a price per ft² of $119.
- 54 S Keystone Ave, Upper Darby, PA 19082 (Harwood Park) is a 2,234 square foot, 3 bedroom, 4.25 bathroom, 0.13 acre property. It was built in 2014 and has an estimate of $306,246 with a price per ft² of $137.
- 56 N Keystone Ave, Upper Darby, PA 19082 (Harwood Park) is a 1,613 square foot, 3 bedroom, 1 bathroom, 0.06 acre property. It was built in 1930 and has an estimate of $202,083 with a price per ft² of $125.
- 52 N Keystone Ave, Upper Darby, PA 19082 (Harwood Park) is a 1,704 square foot, 3 bedroom, 1 bathroom, 0.15 acre property. It was built in 1920 and has an estimate of $189,750 with a price per ft² of $111.
- 58 N Keystone Ave, Upper Darby, PA 19082 (Harwood Park) is a 1,790 square foot, 3 bedroom, 1 bathroom, 0.07 acre property. It was built in 1930 and has an estimate of $228,088 with a price per ft² of $127.
- 81 N Keystone Ave, Upper Darby, PA 19082 is a 1,214 square foot, 3 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $90,982 with a price per ft² of $75.
- 33 N Keystone Ave, Upper Darby, PA 19082 is a 1,254 square foot, 3 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $125,256 with a price per ft² of $100.
- 8 N Keystone Ave, Upper Darby, PA 19082 is a 1,654 square foot, 4 bedroom, 3.25 bathroom, 0.06 acre property. It was built in 1913 and has an estimate of $220,450 with a price per ft² of $133.
- 1425 S Keystone Ave, Upper Darby, PA 19082 (Beverly Hills) is a 1,971 square foot, 3 bedroom, 2.25 bathroom, 0.14 acre property. It was built in 1935 and has an estimate of $322,406 with a price per ft² of $164.
- 42 N Keystone Ave, Upper Darby, PA 19082 is a 1,068 square foot, 3 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $111,603 with a price per ft² of $104.
- 58 N Keystone Ave, Upper Darby, PA 19082 is a 956 square foot, 3 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $113,022 with a price per ft² of $118.
- 51 N Keystone Ave, Upper Darby, PA 19082 is a 1,258 square foot, 3 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $120,947 with a price per ft² of $96.
- 62 N Keystone Ave, Upper Darby, PA 19082 is a 1,064 square foot, 3 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $84,632 with a price per ft² of $80.
- 53 N Keystone Ave, Upper Darby, PA 19082 is a 1,258 square foot, 2 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $119,636 with a price per ft² of $95.
- 63 N Keystone Ave, Upper Darby, PA 19082 is a 1,280 square foot, 3 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $127,655 with a price per ft² of $100.
- 85 N Keystone Ave, Upper Darby, PA 19082 is a 1,214 square foot, 2 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $89,059 with a price per ft² of $73.
- 12 N Keystone Ave, Upper Darby, PA 19082 is a 3,838 square foot and 0.09 acre property. It was built in 1990 and has an estimate of $364,119 with a price per ft² of $95.
- 111 S Keystone Ave, Upper Darby, PA 19082 is a 1,605 square foot, 4 bedroom, 2.25 bathroom, 0.04 acre property. It was built in 1904 and has an estimate of $250,776 with a price per ft² of $156.
- 44 N Keystone Ave, Upper Darby, PA 19082 is a 1,068 square foot, 3 bedroom, 1 bathroom, 0.03 acre property. It was built in 1913 and has an estimate of $119,215 with a price per ft² of $112.
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