Six years later, he began an architecture degree at the École of fine arts in Montreal.

After graduating in 1952, he joined the Taliesin Fellowship, where he completed a one-year internship (from August 1952 to July 1953) under the direction of American architect Frank Lloyd Wright in Wisconsin and Arizona, the first Quebecer architect to be an apprentice to Wright.

In 1990, he was honored with the award of excellence from the Royal Architectural Institute of Canada (RAIC).

In 2001, Claude Bergeron, a retired professor from Laval University and specialist in contemporary Quebec architecture, wrote a comprehensive book ("Roger D'Astous Architecte", 234 pages) about the architect's entire professional body of work.

Montreal filmmaker Étienne Desrosiers produced a 104-minute documentary, Roger D'Astous (2016), covering the complete lifespan of the architect, through interviews with clients and collaborators and unseen archive footage.