Walter, John, Farmstead
Why it's listed
Built of handmade red brick laid in common bond, the two-story house at Mamont Road in Washington Township was begun in 1848 by John Walter, a blacksmith and dairy farmer. It has five bays, end chimneys, a gable roof, and a three-part doorway with a tripartite window above it, with cut stone lintels and original shutters. Its interior includes wide white oak floors, a walnut center hall stair with a continuous curving railing, and carefully detailed trim in the living and dining rooms. A circa 1846 bank barn across the road, dated in relief above one opening, was used for Walter's dairy. The nomination regards the house as a typical example of center hall, ell-plan brick farmhouses built in the region before the Civil War. It is also valued as a locally important farmstead complex, with its 1974 rear porch enclosure and kitchen addition judged sympathetic to the original form.
Significance in brief: The nomination argues the house is a typical example of a mid-nineteenth-century center hall, ell-plan brick farmhouse of southwestern Pennsylvania, with interior woodwork common to the area. It also argues the house and its outbuildings form a locally important farmstead complex that retains a high degree of integrity.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 95000885, listed July 21, 1995. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence high).
Key facts
| Address | 166 Mamont Dr., Washington Township, Export |
|---|---|
| County | Westmoreland County |
| Listed | July 21, 1995 |
| Reference number | 95000885 |
| Resource type | Building |
| Period of significance | 1846-1912 |
| Architectural style | Greek Revival |
| Criteria |
|
| Areas of significance | Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | The house has been in residential use; the barn is separately owned and the land is no longer farmed. |
| Acreage | 1.7 |
| Coordinates | 40.54781, -79.58888 (NPS GIS) |
What listing means for this property
National Register listing is honorary for a privately owned home: it does not by itself restrict what an owner may do with their own money, and it does not require public access. Restrictions come from local landmark or historic-district ordinances, which are separate (how they differ).
Owner-occupied houses are not eligible for the 20% federal rehabilitation tax credit, which applies to income-producing buildings, but many states offer credits for homeowners. Listing also opens the door to preservation easements and to buying a plaque. Start with what listing means for homeowners, renovating a listed house and selling one.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 95000885.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q1702097
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.