400 SW Sixth Avenue is an eleven-story office building in Downtown Portland in the U.S. state of Oregon.

[2] The planned $3.5 million, five-story building was designed by Stanton, Boles, Maguire & Church and was to have 100,000 square feet (9,300 m2) of space.

[1][2] Construction began in December 1957 on what was to be a two-phase project, in which an initial five-story building would be built to allow the bank to move before its existing 1923 structure was demolished.

[4] The curtain wall began going up in November 1958, and consisted of glass mosaic squares, becoming the first building in the Northwest to use this new type of panel.

[6] The interior utilized walnut and light marble trim, and included what was believed to be the largest piece of carpet ever laid in the Pacific Northwest at that time, which was installed by Meier & Frank.

[13] United Trust then sold the building in August 1988 for $30.5 million to Almaden Plaza Associates, which included the lease with Farwest.

[13] In February 1989, Farwest became insolvent and was seized by regulators, including then insurance commissioner Ted Kulongoski, with later liquidation.