Halderman, Nathaniel, House
Why it's listed
Built in 1854, this two-story brick house at 728 East Washington Street in Mount Carroll is an early Italianate residence of a simplified type found in northwestern Illinois. Its bricks came from the Hallett Brickyard, an early local business. The house is three bays wide, with a full-width one-story porch, a low broad cupola, symmetrical side bays and double brackets under the cornices. Inside, a central stair hall with a cherry balustrade separates two large rooms, and a rear wing holds the dining room, kitchen and a smoke house with a large fireplace. Jacob Emmert was the builder. The house is also tied to Nathaniel Halderman (1811-1880), who arrived from Pennsylvania in 1841 and helped build the mill that began the settlement of Mount Carroll. He helped lay out the town, supported moving the county seat there, became its first mayor and served as County Treasurer for twelve years.
Significance in brief: The nomination calls it a good example of a simplified early Italianate house typical of northwestern Illinois. It is also significant for its link to Nathaniel Halderman, who helped settle Mount Carroll, laid out the town site, served as its first mayor and was County Treasurer for twelve years.
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 80001339, listed November 24, 1980. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | 728 E. Washington St., Mount Carroll |
|---|---|
| County | Carroll County |
| Listed | November 24, 1980 |
| Reference number | 80001339 |
| Resource type | Building |
| Period of significance | 1854 |
| Architect / builder | Jacob Emmert, builder |
| Architectural style | Early Italianate |
| Areas of significance | Exploration/Settlement, Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Listed as occupied, in excellent condition, with few alterations; used as a private residence. |
| Acreage | 1.1 |
| Coordinates | 42.09786, -89.97183 (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 80001339.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q20639172
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.