He graduated from Kyoto University and worked for Tadao Ando and Associates.
He is an elite member of the Supporters of Romania Research at the Academy of Romanian Scientists.
[2] In 1988, Yamaguchi was a founding member of ARX, an international research group for theory and practice of architecture which has offices in New York, Geneva, Berlin, and Lisbon.
[citation needed] The group includes staff from the offices of Peter Eisenman and Daniel Libeskind, as well as theorists from Columbia University.
He founded Takashi Yamaguchi & Associates in 1996, and served as a visiting scholar at Harvard University in 2010.