Brattle Hall
Why it's listed
Brattle Hall is a brick and clapboard building at 40 Brattle Street in Cambridge, Massachusetts, built in 1889 in the Dutch Colonial Revival style. The prominent architects Longfellow, Alden & Harlow designed it as a large public hall for the Cambridge Social Union. The Union, founded in 1871, had set up a free reading room and library and served as a forum for social activities. When it moved in 1889 to the William Brattle House at 42 Brattle Street, the hall was built next door to host its literary, musical and dramatic events. In 1907 architect Charles Cogswell carried out a number of alterations and added brick ends. The building later passed to commercial use and continues as a theater offering cultural entertainment to the public. Its listing rests on its cultural associations with the Social Union and its role in the social and artistic life of Cambridge.
Significance in brief: The hall was built for the Cambridge Social Union, which was founded in 1871 to run a free reading room and library and to host social activities. It housed the Union's literary, musical and dramatic events after the group moved next door in 1889. The reviewer recommended it for cultural associations under Criterion A.
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 82001925, listed April 13, 1982. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | 40 Brattle St., Cambridge |
|---|---|
| County | Middlesex County |
| Listed | April 13, 1982 |
| Reference number | 82001925 |
| Resource type | Building |
| Architect / builder | Longfellow, Alden & Harlow; 1907 alterations by Charles Cogswell |
| Architectural style | Dutch Colonial Revival |
| Criteria |
|
| Areas of significance | Entertainment/Recreation, Education, Social History |
| Level of significance | State |
| Status (as stated in the nomination) | Currently in use as a commercial theater providing cultural entertainment; altered in 1907. |
| Acreage | 1 |
| Within district | Harvard Square Historic District (Boundary Increase) |
| Coordinates | 42.37348, -71.12118 (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 82001925.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q4958106
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.