The value of interior design Published by Patrick Voisin, August 02, 2017. Interior design can have such a positive impact on the occupants of well-designed spaces. Those working in the design realm understand this acutely but it is not always common knowledge among the general public. One of IDC’s goals it so make interior design more visible by showing how design impacts lives in Canada and around the globe. We recently caught up with Oakville, Ontario-based One Three Des