The Humboldt Bank Building is a 19-floor office building at 785 Market Street and Fourth Street in San Francisco, California. It was created by the Humboldt Savings Bank, with construction beginning in 1905. However, the 1906 San Francisco earthquake destroyed its initial construction phase. A new building was completed in 1908.[3] The building consists granite, marble, and terra cotta tile facing over reinforced concrete and steel.