After graduating from the University of Laval School of Architecture in 1985, Sylvain Allaire founded ABCP with the three other partners. The firm was in operation from 1987 to 2006, with offices based in Saint-Hyacinthe, Montréal, Québec City, Jakarta and Beijing, while employing 50 professionals. Within the firm he was a principal designer and supervised production, in addition to managing human resources. As both a designer and project manager, Sylvain has constructed several recognized and award winning projects. He also worked with Guy Courchesne to establish the ABCP offices in Beijing and Jakarta.
In September 2006, he co-founded the firm a cd f* architecture-urbanisme-intérieur along with partners Guy Courchesne and Maxime-Alexis Frappier. Today, the firm is now comprised of 50 talented professionals with offices in St-Hyacinthe and Montréal.