In 1972, McIntyre formed an additional partnership with George Connor and Donald Wolbrink and form International PlanningCollaborative (Interplan). He wrote the 1973 Strategy Plan for the City of Melbourne, which limited high rise development to its eastern and western shoulders. His major projects include Melbourne's Parliament Station, The Jam Factory Complex in South Yarra, the Westfield Knox in Wantirna South and the creation of the Dinner Plain alpine village near Mount Hotham, Victoria. He was the Professor of Architecture at Melbourne University between 1988 and 1992 and has won numerous awards. His wife Dione is also an architect.