Thomas Leiper Estate | |
 "Avondale", Thomas Leiper House | |
   | |
| Location | Avondale Rd., Wallingford, Pennsylvania |
|---|---|
| Coordinates | 39°53′12″N 75°21′30″W / 39.88667°N 75.35833°W |
| Area | 6 acres (2.4 ha) |
| Built | 1785 |
| NRHP reference No. | 70000547[1] |
| Added to NRHP | December 29, 1970 |
The Thomas Leiper Estate, also known as Avondale, is an historic, American estate that is located in Wallingford in Nether Providence Township, Delaware County, Pennsylvania.
It was added to the National Register of Historic Places in 1971.[1]