Built in 1939 with Works Progress Administration funding, the auditorium is one of several buildings in the area in a similar style, known as WPA Moderne.

A projecting rounded bay at the front comprises the main entrance, with three pairs of doors separated by tall fluted pilasters surmounted by cast busts of Comedy and Tragedy, dividing a triptych relief sculpture that is itself divided into three levels.

The ends of the facade curve around to the side elevations, which have inset fluted panels whose pilasters are crowned with more cast sculpture derived from characters from A Midsummer Night's Dream.

Curved stairs give access to the balcony on either side of the lobby, with six doors into the main house.

[2] The King City Joint Union High School Auditorium was listed on the National Register of Historic Places on July 23, 1991.