Treadwell Mansion and Carriage House
Also known as: Macky Hall and Carriage House
Why it's listed
Macky Hall, originally the Treadwell mansion, and its Carriage House sit near the center of a 4.5-acre college campus at 5212 Broadway in Oakland. Built between about 1870 and 1880, the three-story wood-frame house is in the Stick-Eastlake manner, with bay windows, vertical trim, scalloped third-floor shingles and gabled dormers. A sketch note points to San Francisco architect Clinton Day as the likely designer. The John Treadwell family, whose wealth came from Alaska gold, coal, railroading and clay products, owned the estate from 1888. In 1923 it was sold to Frederick Meyer, founder of the California School of Arts and Crafts, who adapted both buildings for academic use. The house now serves as administrative offices, and its exterior is largely unchanged. The Carriage House once held studios, has been moved several times for new buildings, and was unoccupied at the time of nomination. The buildings are valued as rare large examples of their style in Oakland and as the core of the campus.
Significance in brief: The nomination cites the buildings as rare large Stick-Eastlake mansions remaining in Oakland. It also points to their use as the residence of James Treadwell, an Alaska gold pioneer and East Bay industrialist, and as the nucleus of the campus of a leading Bay Area art college.
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 77000286, listed July 15, 1977. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | 5212 Broadway, Oakland |
|---|---|
| County | Alameda County |
| Listed | July 15, 1977 |
| Reference number | 77000286 |
| Resource type | Building |
| Period of significance | c. 1880 to 1935 |
| Architect / builder | Architect: probably Clinton Day; builder not known |
| Architectural style | Stick-Eastlake, with touches of Queen Anne and Victorian Gothic |
| Areas of significance | Education, Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Macky Hall is in excellent condition and used as the college administrative office building. The Carriage House is in good condition but unoccupied on a temporary foundation after being moved several times. |
| Acreage | 0.1 |
| Coordinates | 37.83576, -122.25081 (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 77000286.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q119995339
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.