The national model building code is a voluntary one. It is reviewed every five years. Typically, the provinces take a look at the new version and decide whether to accept it as is or accept it with modifications. Some of the provinces have already expanded the use of wood by raising the limit from four storeys to six. The national model code now says six—I'm not sure if some of the provinces have adopted it—but we can go a lot higher. We can go to 10 pretty easily, 12, 20, and demonstration projects that are occurring are showing us the art of the possible.
On May 17th, 2016. See this statement in context.