The 27-story building was completed in 1930 and is designed in the art deco style.
Just two years ago the Buckingham building was vacant. It had numerous code violations and no working systems.
The developer proposed converting the existing office building into a dormitory and took advantage of tax credits which required rehabilitation of any interior historic features.
"It has all new mechanical systems. All new windows and extensive facade restoration was done. Cleaning the building... tuckpointing and numerous repairs," said Project Manager David Dewey.
Last August the Buckingham building was re-opened as a student housing facility for Columbia College.
Total cost of the landmark's rehabilitation was more than $43 million.