John Walter Farmstead | |
 The house in September 2014 | |
   | |
| Location | 166 Mamont Dr., Washington Township Pennsylvania |
|---|---|
| Coordinates | 40°28′19″N 79°35′21″W / 40.47194°N 79.58917°W |
| Area | 1.7 acres (0.69 ha) |
| Built | c. 1846, 1848, 1912 |
| Architectural style | Greek Revival |
| NRHP reference No. | 95000885[1] |
| Added to NRHP | July 21, 1995 |
The John Walter Farmstead, also known as the Lengauer House, is an historic American home that is located in Washington Township, Westmoreland County, Pennsylvania.
It was added to the National Register of Historic Places in 1995.[1]