Commercial Union Assurance Building, Renaissance Revival office building with roof terrace in the Financial District, San Francisco, United States.
The Commercial Union Assurance Building is an office structure featuring Renaissance Revival design in the Financial District. The facade displays symmetrical lines with pale limestone details and reddish terracotta ornamentations that mark its exterior.
The building was completed in 1921 by architect George W. Kelham during a period of economic growth following World War I. When finished, it matched the height of San Francisco City Hall.
This building reflects a time when San Francisco was growing rapidly and needed new spaces for business. The classical details visible throughout convey a sense of permanence and prosperity from that era.
The building is located on Montgomery Street and remains an active business center with modern office spaces and flexible work areas. The rooftop terrace provides a good vantage point for overlooking the surrounding area.
The rooftop terrace was unusual for office buildings of that era and provided workers with a rare outdoor space. This feature was intended to be practical rather than purely decorative at the time.
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