Underhill, George, House
Also known as: Wayside
Why it's listed
Beside a mill pond on Factory Pond Road in Locust Valley, this house began as a modest 1½-story farmhouse built about 1790 for George Underhill, a great-great-grandson of Captain John Underhill, who received land in the Matinecock area in 1667. A four-bay, two-story wing followed by about 1830, and connectors and a south wing were added in the mid-20th century. The result is a U-shaped plan unified by wood shingles and plain, unornamented volumes that may reflect the family's Quaker simplicity. Inside, the c1790 wing keeps wainscoting, board doors and wrought hardware, while the later wing shows Colonial Revival changes. A cottage, possibly a tenant house, and a modern garage stand on the 5.13-acre parcel of lawn and fields. The property was listed for its association with an early Matinecock settler family and as an example of vernacular house design evolving over nearly two centuries.
Significance in brief: The nomination argues the house is significant under Criterion A for its link to the Underhill family, among the earliest settlers of the Matinecock area. Under Criterion C it represents late-18th and 19th century settlement and the evolution of vernacular residential design in northern Nassau County. The property keeps a high degree of integrity in its pastoral setting and its design.
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 03000592, listed July 5, 2003. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | 28 Factory Pond Rd., Locust Valley |
|---|---|
| County | Nassau County |
| Listed | July 5, 2003 |
| Reference number | 03000592 |
| Resource type | Building |
| Period of significance | c1790 |
| Architect / builder | unknown |
| Architectural style | No Style |
| Criteria |
|
| Areas of significance | Architecture, Exploration/Settlement |
| Level of significance | Local |
| Status (as stated in the nomination) | Used as a single dwelling, both historically and currently. |
| Acreage | 5.1 |
| Coordinates | 40.89606, -73.57728 (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 03000592.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5545394
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.