Brown Square House
Also known as: Garrison Inn
Why it's listed
Built in 1809-1810 for Newburyport merchant Moses Brown, this four-story brick building at 11 Brown Square began as two mirror-image Federal town houses. Brown meant them to anchor one end of a long terrace facing the square he gave the town, but the illness of the contractor, the fire of 1811 and the War of 1812 stopped the project, and protruding bricks on one wall still wait for a neighbor that never came. The result is the largest remaining brick building in the city, with Flemish-bond brick, sandstone trim, fan-lit doorways and a dentiled cornice largely unchanged. Inside, the stairs and some partitions were altered, but mantels, cornices and sliding doors between the second-floor drawing rooms remain. By 1849 it was a boarding house, then a hotel, and in 1923 it became the Garrison Inn, named for William Lloyd Garrison. The inn closed in 1948, leaving the building empty but intact.
Significance in brief: It is the largest remaining brick building in Newburyport and the only completed part of a planned terrace of grand town houses facing Brown Square. The exterior is almost unaltered and many interior details survive. It also reflects the ambitions of Moses Brown, a leading merchant and philanthropist, and its long use as an inn adds to its history.
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 75000284, listed March 7, 1975. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | 11 Brown Sq., Newburyport |
|---|---|
| County | Essex County |
| Listed | March 7, 1975 |
| Reference number | 75000284 |
| Resource type | Building |
| Period of significance | 1800-1899 |
| Architect / builder | Moses Brown, builder |
| Architectural style | Federal |
| Areas of significance | Commerce, Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | The inn closed in December 1948 and the building remained empty but intact; the owning trust was seeking funding to restore it and a zoning variance to reopen the inn. Condition is marked fair. |
| Acreage | 0.9 |
| Within district | Newburyport Historic District |
| Coordinates | 42.81113, -70.87374 (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.
Noted as vacant in the nomination. Nomination documents can be decades old; current status may differ. If you are considering buying an empty listed property, read the due-diligence checklist.
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 75000284.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q4976268
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.