Sumner, Charles, House
Why it's listed
Charles Sumner lived for more than thirty years in this Federal style four-story townhouse at 20 Hancock Street in Boston. The central original block follows a standard side hall plan, with a front parlor, a rear sitting room and a kitchen beyond, and the upper floors repeat a similar arrangement. Although the building is not in the best repair, its floor plan, mantelpieces and woodwork remain intact. Sumner, born in Boston in 1811, became a US senator in 1851 and was among the most outspoken political opponents of slavery. He helped organize the Republican Party, wrote the oration "The Barbarism of Slavery," and was among the first prominent statesmen to urge emancipation during the Civil War. As chairman of the Foreign Relations Committee he helped keep the country at peace with Britain and France, and he later joined the radical Republican push for Reconstruction and civil rights for freedmen. The house is recognized for its association with him.
Significance in brief: The house was the residence of Charles Sumner, a leading political opponent of slavery and a US senator from 1851. He helped found the Republican Party, urged emancipation early in the Civil War, chaired the Senate Foreign Relations Committee, and led radical Reconstruction efforts. The form also notes his intemperate speech drew historical criticism.
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 73001953, listed November 7, 1973. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | 20 Hancock St., Boston |
|---|---|
| County | Suffolk County |
| Listed | November 7, 1973 |
| Reference number | 73001953 |
| Resource type | Building |
| Architectural style | Federal |
| Areas of significance | Politics/Government, Social History |
| Level of significance | National |
| National Historic Landmark | Yes, designated November 7, 1973 |
| Status (as stated in the nomination) | Described as not in the best of repair owing to the owner's limited finances, but the floor plan, mantelpieces and woodwork are intact. It is a private residence and not open to the public. |
| Acreage | 0.9 |
| Within district | Beacon Hill Historic District |
| Coordinates | 42.36043, -71.06425 (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 73001953.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5082765
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.