According to his obituary, Alfred Green received his training in architecture at the Beaux Arts Institute of Design in Philadelphia, probably through the T-Square Club. By 1917 he is listed in the Philadelphia city directories as an architect; an by December 1923 he has joined
Byron H. Edwards in
Edwards & Green, an affiliation which continued at least through 1958. In 1928 Edwards & Green moved their offices to Camden, NJ, where Green supervised the construction of the Camden County Courthouse.
Green was registered to practice in Pennsylvania in 1922 and in New Jersey in 1923. He joined the national AIA in 1944 and was also a member of its New Jersey Chapter. While in New Jersey, he also served as president of the New Jersey Board of Architects.