This elegant building was at that time composed of a three storey housing and commerce section on St. Paul Street and a four storey warehouse on Place D'Youville, formerly known as Rue des commissaires. During that time the building was intended for trade and housing, in 1855 the use of the building becomes exclusively commercial. Finally in 1908 the building was acquired by James Coristine and transformed into a five storey office building with three stores on St. Paul Street. Today renowned for its imposing inner courtyard, its impressive circular staircase and architectural treasures, the building houses an art gallery, a renowned restaurant and plenty of offices.