Dederer Stone House-Stonehurst
Why it's listed
Stonehurst is a two and one-half story stone house at 82 Rockland Road in Sparkill, Orangetown, built in 1865 by Isaac M. Dederer, as a date stone records. Its T-shaped plan is built of local granite with dressed sandstone trim, topped by jerkin-headed slate roofs with pierced bargeboards in quatrefoil and star patterns. Pointed-arch windows hold leaded diamond-pane sash. Inside, a side hall plan includes a paneled stair balustrade, a marble fireplace in the drawing room, and original flooring, moldings and doors. A two-story barn and a stone hitching post stand on the ten-acre lot. The house is significant as a fully developed example of Picturesque, Gothic Revival design, reflecting ideas promoted by A.J. Downing, Alexander Jackson Davis and Calvert Vaux. No architect is documented, but regional designer Daniel Topping Atwood is suggested because of similarities to a chapel he designed nearby. The house and setting retain high integrity and serve as a local landmark of Orangetown's nineteenth century growth.
Significance in brief: The nomination argues the house is an outstanding example of mid-nineteenth century lower Hudson Valley Gothic Revival architecture, embodying Picturesque movement ideas associated with A.J. Downing, Calvert Vaux and others. It is described as one of the few fully articulated Picturesque examples in this part of the Hudson Valley, with remarkable integrity. It is also a local landmark reflecting Orangetown's nineteenth century growth.
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 02001650, listed December 31, 2002. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | 82 Rockland Rd., Orangetown |
|---|---|
| County | Rockland County |
| Listed | December 31, 2002 |
| Reference number | 02001650 |
| Resource type | Building |
| Period of significance | 1865 |
| Architect / builder | Isaac M. Dederer (builder); no architect attributed, though Daniel Topping Atwood is suggested as a possible link |
| Architectural style | Mid-19th Century/Gothic Revival |
| Criteria |
|
| Areas of significance | Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Retains a remarkable degree of integrity; in use as a single dwelling. |
| Acreage | 10 |
| Coordinates | 41.03158, -73.92191 (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 02001650.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5249772
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.