Mount St. Mary's Academy and Convent
Also known as: Orphanage of the Holy Angels
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Approximate location: the National Park Service places this pin arbitrarily within the property, not at a surveyed point (stated accuracy ±12 m).
Why it's listed
Mount St. Mary's Academy and Convent in Grass Valley is a three-story white building, 120 by 40 feet, with rough stone and brick at the first floor and stuccoed upper stories. Its tall proportions, broad flat window surrounds, rusticated corners and long free-standing entrance stair recall rural Italian Palladian design, and a walled garden with boxwood walks, statues and a fountain sits in front. A wooden Gothic-style chapel, lined inside with embossed tin sheets, adjoins the north end. Construction began in 1865, and the Sisters moved in that May. The first orphans arrived in 1866, making it the first orphanage in the Mother Lode and interior California. Financial pressure led the Sisters to open a boarding school in 1868, and it became Mt. St. Mary's Academy in 1880. Boarders were housed here until 1927, classes continued until 1966, and the Sisters lived in the building until 1968. It was recognized for its social service, religious, educational and cultural contributions.
Significance in brief: The building was the first orphanage in the Mother Lode and in the interior of California. It later became a select boarding school, Mt. St. Mary's Academy, and continued to provide social service, religious training, education and culture to the region.
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 74000543, listed May 3, 1974. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | Church and Chapel Sts., Grass Valley |
|---|---|
| County | Nevada County |
| Listed | May 3, 1974 |
| Reference number | 74000543 |
| Resource type | Building |
| Period of significance | 19th Century (begun March 1865; cornerstone laid 2 May 1865) |
| Architectural style | Simple and free Palladian Renaissance (academy); Gothic vernacular (St. Joseph's Chapel) |
| Areas of significance | Education |
| Level of significance | State |
| Status (as stated in the nomination) | Condition listed as fair and altered. Classroom use ended in 1966 and the Sisters left at Christmas 1968. The form states it is available to rent and used for fund-raising events. |
| Acreage | 2 |
| Coordinates | 39.21465, -121.06859 (NPS GIS) |
What listing means for this property
Religious properties are listed for their architectural or historical significance, not their religious use. Listing is honorary and does not restrict the congregation's use of the building. The federal rehabilitation credit is generally unavailable unless part of the building is income-producing; some state programmes and preservation grants do cover religious buildings. Federal funding or permits trigger Section 106 review.
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 74000543.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q14683433
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.