Hardenbergh, Isaac, House
Why it's listed
Set on Route 23 in the Catskill region, this Roxbury farm centers on a stone house built about 1790 by Isaac Hardenbergh, grandson of Johannes Hardenbergh, whose 1708 patent covered much of the Catskills. The house is built as a bank house, three stories at the south and two at the north, with a five-bay symmetrical front, brick quoining and Georgian proportions. Its central chimney, boxed stairs and exposed floor joists reflect Dutch and German building habits. A frame addition of about 1820 stands to the north. Hardenbergh ran an early mill and the area's first store, and served as Roxbury's first town supervisor from 1799 to 1806. Later generations farmed, turned to dairying, and in the early twentieth century operated a tourist home. The 30-acre property also holds a stone smokehouse, dug well, carriage barn, barn and tenant house ruins, and cobblestone gateposts set with millstones. Its period of significance runs from about 1790 to 1933.
Significance in brief: The nomination argues the house is tied to the expansion and decline of New York's early land patents (Criterion A). It also presents the house as an intact, representative example of late eighteenth-century vernacular stone architecture (Criterion C), blending Georgian and Dutch/German building traditions. The house was home to Roxbury's first Town Supervisor and housed the area's first store.
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 94001369, listed December 12, 1994. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | NY 23 N of jct. with William Lutz Rd., Roxbury |
|---|---|
| County | Delaware County |
| Listed | December 12, 1994 |
| Reference number | 94001369 |
| Resource type | Building |
| Period of significance | ca. 1790-1933 |
| Architectural style | Colonial / Georgian |
| Criteria |
|
| Areas of significance | Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Current owners have maintained the house without significant alterations since 1969; the property remains a single dwelling with secondary structures and agricultural fields. |
| Acreage | 29.1 |
| Coordinates | 42.33667, -74.45186 (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 94001369.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q6076449
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.