February 6, 1856
County seat moves to San Leandro.

The county seat moved from Alvarado to San Leandro on February 6, 1856. A new permanent brick courthouse (seen in the photograph to the right) is built.

The courthouse collapsed in 1868 due to a very large earthquake on the Hayward fault. The courthouse was rebuilt and used until 1873 when the county seat moved to Oakland.

Picture of courthouse in San Leandro.
Photo courtesy of the Oakland Public Library.