Treemont Manor
Also known as: Component No. 24
Why it's listed
Treemont Manor is a brick mansion built in 1929 at 71 Old Niskayuna Road in Colonie, Albany County. Designed by the New York firm Adams & Prentice and built by John B. Waldbillig, Inc., it follows the Georgian Revival style in the manner of an English Country house. The L-shaped house has a two-story servants' wing with a round-arched drive-through leading to a double courtyard. The main entrance sits on the second floor, reached by a brick stairway and framed by pilasters and a carved broken pediment. Inside are a curving three-story staircase, carved woodwork and Adamesque mantels. The eleven-acre estate keeps its original parcel, with woodland, open fields, hedges, exotic plantings, statuary and a formal English garden. A one-story guest house and a recent tennis court complete the grounds, though the tennis court does not contribute to the significance. The property was listed as a fine example of the large suburban estates that grew up around Albany in the early twentieth century.
Significance in brief: The nomination presents it as a distinctive, architect-designed early twentieth century suburban estate in the English Country house taste. It reflects suburban growth outward from Albany through Colonie. The formal English garden and landscaped grounds contribute substantially to its significance.
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 85002749, listed October 3, 1985. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | 71 Old Niskayuna Rd., Colonie |
|---|---|
| County | Albany County |
| Listed | October 3, 1985 |
| Reference number | 85002749 |
| Resource type | Building |
| Architect / builder | Architect: Adams & Prentice, New York City; Builder: John B. Waldbillig, Inc. |
| Architectural style | Georgian Revival (English Revival / English Country house taste) |
| Areas of significance | Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Listed in excellent condition, with no known threats; the mansion remains a residence and the guest house serves as an apartment and office. |
| Acreage | 11 |
| Coordinates | 42.71429, -73.76321 (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 85002749.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q14707503
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.