The Failing Office Building is a building in downtown Portland, Oregon, United States that was listed on the National Register of Historic Places on October 31, 2007. The building was built during the rapid growth in Portland's business district after the Lewis and Clark Centennial Exposition in 1905. It was built with six stories in 1907, with a six-story addition in 1913. It features a reinforced steel-frame structure with facades of yellow brick and glazed terra cotta.