Fairchild Mansion
Also known as: Masonic Temple
Why it's listed
Built in 1867 as a two-story Italian villa with a flat roof, this brick house on Main Street in Oneonta was transformed after George W. Fairchild bought it in 1891. In 1897 he added a tower, a third floor, chimneys and a heavy imported Belgian tile roof, using Queen Anne details such as a candlesnuffer tower roof, flaring cornices and a porte-cochere. Further interior work followed in 1915, producing six fireplaces, six baths and rooms panelled in mahogany, oak, cherry and other woods. Fairchild was a congressman from 1906 to 1918 and a leading promoter of the company that became IBM. His son Sherman, born and raised here, became a prominent inventor, known for an aerial camera used in World War II. A Masonic lodge acquired the house in 1929, keeping most of the furnishings. Though surrounded by modern development, it remains the only large residence left in central Oneonta and a reminder of the prosperous 1890s.
Significance in brief: The nomination argues the mansion is important for its association with George W. Fairchild, a U.S. Congressman and early promoter of the company that became IBM, and his son Sherman M. Fairchild, a noted inventor. It is also cited as one of the best examples of late 19th-century domestic architecture in the Oneonta area and the only large residence left in the city center.
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 74001294, listed February 12, 1974. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | 318 Main St., Oneonta |
|---|---|
| County | Otsego County |
| Listed | February 12, 1974 |
| Reference number | 74001294 |
| Resource type | Building |
| Period of significance | 19th Century |
| Architectural style | Italian villa remodelled in Queen Anne style |
| Areas of significance | Industry, Science, Politics/Government, Architecture, Communications, Invention |
| Level of significance | Local |
| Status (as stated in the nomination) | Occupied and used by a Masonic lodge since 1929; interior furnishings donated by the Fairchild heir remain in place, and the exterior retains its 1890s appearance. |
| Acreage | 1.5 |
| Within district | Oneonta Downtown Historic District |
| Coordinates | 42.45595, -75.05896 (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 74001294.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5430081
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.