Thomas Mill and Miller's House
Why it's listed
Built in 1744 by Richard Thomas II, the Thomas Mill is a coursed rubble stone and timber-framed gristmill on Valley Creek in West Whiteland Township, Chester County. Its wall posts rest directly on the foundation in an interrupted sill arrangement, a framing method of English origin that is rarely found in North America. A date carved into a roof timber confirms the construction year. Much of the 19th-century grinding equipment and a cast iron overshot waterwheel remain in the building. The adjacent Miller's House, built around 1835 as a tenant house for the miller, is a two-and-a-half-story stone dwelling with a double-cell plan. It has two rooms stacked one behind the other, a central staircase, and gable-end fireplaces, with decorative Federal-style mantels in the first-floor rooms. The house was moved about 200 feet in 2001 when the surrounding land was developed into a car dealership. The property is significant for the mill's construction and the house's plan.
Significance in brief: The nomination argues the mill is a rare surviving example of interrupted sill timber framing, an English technique seldom used in North America, and that it is the only framed mill surviving in Chester County. The Miller's House is regarded as a representative example of the double-cell house plan common in southeastern Pennsylvania. Both buildings retain enough design, materials and workmanship to be considered significant despite relocation of the house and loss of setting.
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 04000468, listed May 19, 2004. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence high).
Key facts
| Address | 130 W. Lincoln Hwy., West Whiteland |
|---|---|
| County | Chester County |
| Listed | May 19, 2004 |
| Reference number | 04000468 |
| Resource type | Building |
| Period of significance | C. 1744-c. 1835 |
| Architectural style | Postmedieval English; Federal |
| Criteria |
|
| Areas of significance | Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | The mill remains in its original location and in working order with much of its milling machinery; the house was moved about 200 feet in 2001 during redevelopment of the site. |
| Acreage | 2 |
| Coordinates | 40.02912, -75.63299 (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 04000468.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q115806054
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.