He was a professor at the University of Tehran and a prolific architect in Iran prior to the Iranian Revolution.
Since he emigrated to the United States in 1978, he has designed many buildings and private residences in Beverly Hills, California.
[4] He was the 2015 recipient of the Will Rogers Award for Best Historic commercial development for his remodelling of 479 North Rodeo Drive (home to designer store Badgley Mischka).
"[6] Gabbay chaired the Design Review Commission of the City of Beverly Hills in 2004.
[8] Additionally, he serves on the board of the Wallis Annenberg Center for the Performing Arts.