Armand Carroll attended San Jose High School in San Jose, CA before he trained at the University of Pennsylvania, earning a certificate of proficiency in 1922. He began his career in the office of
William H. Lee, eventually (according to his obituary in the
Philadelphia Bulletin) becoming chief designer in that office. Carroll later opened his own firm in Philadelphia, probably around 1943 when he joined the national AIA. He was a member of the Philadelphia Chapter.