Christopther Theis retired from LSU in 2010 and was honored by the Association of Collegiate Schools of Architecture (ACSA) in the same year by being inducted into the ACSA College of Distinguished Professors. The only other LSU faculty member to be so honored was the late Robert Heck. During retirement he was working on a book with the working title An Unnatural House: Architecture and the Idea of Nature.
Theis passed away in September 2021. He resided in Kansas City, Missouri. The LSU College of Art & Design respectfully mourns his passing.