Paddock Mansion
Also known as: Jefferson County Historical Society Headquarters
Why it's listed
Built in 1876 by John Hose for Edwin and Olive Paddock, this brick mansion at 228 Washington Street in Watertown is the only house left in what was once a residential neighborhood and is now a business district. The two-and-a-half story Eastlake design has red-orange brick, black brick accents, a three-story corner tower, cross gables, lattice-decorated balconies and turned millwork. Inside, black walnut and ash woodwork, plaster friezes, tiled fireplace mantels and a striped walnut stair hall survive, along with the original butler's pantry. Edwin Paddock was a banker and real estate owner, and Olive Paddock ran a sewing school and kept a conservatory of rare plants. After her death in 1922 she left the house and grounds to the Jefferson County Historical Society, which still uses it as its headquarters and museum. The nomination values it as a rare, well-preserved Victorian house representing Watertown's nineteenth-century merchant-banker families.
Significance in brief: The nomination calls it an outstanding example of a high Victorian house that retains most of its original features, and one of the most important Victorian houses in northern New York. It is the last residence remaining in Watertown's business district and one of few houses built by the city's merchant-bankers to survive on Washington Street. It also reflects the Paddock family's banking and business prominence and the work of builder-architect John Hose.
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 79001587, listed December 11, 1979. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | 228 Washington St., Watertown |
|---|---|
| County | Jefferson County |
| Listed | December 11, 1979 |
| Reference number | 79001587 |
| Resource type | Building |
| Period of significance | 1876 |
| Architect / builder | John Hose |
| Architectural style | Eastlake (high Victorian) |
| Areas of significance | Commerce, Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Occupied and used as the Jefferson County Historical Society headquarters and local history museum; some exterior features such as the conservatory, rear porch and porte cochere have been removed. |
| Acreage | 1 |
| Coordinates | 43.97322, -75.91147 (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 79001587.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q7123365
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.