Treadwell Mansion and Carriage House
historic place
The Treadwell Mansion and Carriage House, a historic place in Oakland, California, was constructed around 1875. Architect Clinton Day designed these buildings, incorporating elements of Gothic Revival and Eastlake Stick architectural styles. The mansion was originally built for John and James Treadwell, who were owners of the Tesla Coal Mine in Alameda County. In 1922, Frederick H. Meyer acquired the property for the California School of Arts and Crafts, which later became the California College of the Arts. The school utilized the buildings starting in 1926 and remained on the site until 2022. The Treadwell Mansion and Carriage House has received multiple historical designations. It was designated an Oakland Landmark on August 5, 1975. Later, on July 15, 1977, it was listed on the National Register of Historic Places and also designated a California Historical Landmark. This site is significant for its architectural style and its role in Oakland's history, from its early owners to its long tenure as an educational institution.