Dan Hanganu led a diversified practice with projects ranging in scale from single-family houses to entire city blocks.
Hanganu was personally recognized with the: Ordre national du Québec- officer (2005); Doctorat honoris causa en architecture from the Université Laval à Québec (2004); Prix Carrière Sam-Lapointe from the Institute of Design Montréal (2004); Doctorat honoris causa in architecture from the University of Bucharest (2003); Man of the year- Board of Trade of Metropolitan Montreal (1998) and with the Prix Paul-Émile Borduas (1992).
His project highlights include the Pointe-à-Callière Museum, the Théâtre du Nouveau Monde, the Saint-Benoît-du-Lac Church, the UQAM Design Pavilion, the Cirque du Soleil studio, HEC Montréal, the Centre des arts Juliette-Lassonde, Hotel Godin, the Montréal Archival Centre, the Nahum Gelber Law Library of McGill University,[5] l’Anglicane de Lévis, the Rimouski Arts Centre, and residential areas in Val de l’Anse.
When the call for entries for Canadian Museum for Human Rights in Winnipeg was made only 30 of the world's most prolific architects, including Rem Koolhaas, Frank Gehry, Zaha Hadid and others were invited.
The Hanganu-Groupe ARCOP consortium went on to become one of the top three finalists in the competition, though the final design was awarded to American architect Antoine Predock.