Shelter Island Windmill
Why it's listed
This octagonal, three-story smock mill sits in the middle of a meadow at the southeast corner of the Sylvester Manor estate on Shelter Island, New York. Clad in shingles and topped with a boat-shaped cap, it was built in 1810 at Southold by Nathaniel Dominy V of the noted East Hampton family of craftsmen. The mill was moved to Shelter Island in 1840 and ground grain commercially until 1879. In 1926 it was moved again, to the Sylvester Manor estate, where it now serves as a decorative feature. Its wood frame uses interlocking joints, and much of the internal machinery survives, including the brake wheel, wallower, millstones, bolter and an internal capstan winder used to turn the cap. A replacement windshaft was installed in 1952. It is one of four surviving Long Island windmills attributed to the Dominy family and is valued as an example of wood technology and regional craftsmanship.
Significance in brief: It is one of four surviving Long Island windmills built by the Dominy family of craftsmen from East Hampton. With its internal machinery largely intact, it is considered a significant example of wood technology and regional vernacular craftsmanship. The form lists its themes as architecture, industry and engineering.
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 78001917, listed December 27, 1978. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | N of Manwaring Rd., Shelter Island |
|---|---|
| County | Suffolk County |
| Listed | December 27, 1978 |
| Reference number | 78001917 |
| Resource type | Building |
| Architect / builder | Nathaniel Dominy V |
| Architectural style | Octagonal smock mill with boat-shaped cap |
| Areas of significance | Industry, Engineering, Architecture |
| Level of significance | State |
| Status (as stated in the nomination) | Condition rated good; no threats known. Windshaft replaced in 1952 and noted as rotting at the head. Mill operated commercially until 1879. |
| Acreage | 1 |
| Coordinates | 41.07607, -72.33501 (NPS GIS) |
What listing means for this property
National Register listing is honorary: it recognises significance and does not restrict what a private owner may do without federal money or permits. It unlocks the 20% federal rehabilitation tax credit for income-producing buildings, state credits in many states, and Section 106 review when federal agencies are involved. See what listing means in practice.
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 78001917.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q7493971
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.