Bank of California Building, Bank building in Downtown Seattle, United States.

The Bank of California Building at 815 2nd Avenue is a rectangular two-story-plus-basement reinforced concrete structure faced in gray glazed terra cotta imitating stone. Its 60-foot Second Avenue facade frames large windows with four freestanding Roman Ionic columns and two pilasters, the center bay slightly widened for the entrance doors and capped by a large arched pediment. Above the attic, a pediment bears the construction date. Inside, a skylit banking room 60 by 70 feet rises 40 feet to a rotunda ceiling.

Construction took place in 1924 on the site where the Epler Block once stood, and the building served as the Bank of California headquarters until 1974. Ownership later passed to other institutions before becoming a Key Bank branch in 1993.

The bank's name once appeared in the frieze above the columns, but the lettering is gone and the band is now bare. Inside, bronze torch lights stand on the pilasters, and large clocks with dials of Escolette marble were set into the balcony grillwork at each end of the main lobby.

The building is an operating Key Bank branch at 815 2nd Avenue, adjoining the Exchange Building mid-block. The banking hall is open to customers during branch hours; the upper floors, basement vaults and former employee rooms are not open to the public. The entrance sits in the centre of the 60-foot Second Avenue facade, between the Ionic columns.

The 1923 design considered putting customer parking in the basement, an unusual idea for the time; the sources do not record whether it was ever built. The fourth floor held offices and a large club room for employees, while the vaults were kept in the basement.