Most tourneys in the Vancouver area are posted on Badminton BC's website. There's also another group (they have a facebook page) called Badmintology who regularly hold tourneys in Richmond.
Badmintology Website: http://www.badmintology.com/ Facebook Page: http://www.facebook.com/groups/109224971520/
The TIO group is hosting a doubles tournament in celebration of Taiwan's 100th anniversary. Free gifts and raffle for all participants! BC: http://www.facebook.com/event.php?eid=131149173649394 Facebook: http://www.facebook.com/event.php?eid=131149173649394 Homepage: http://www.tioyoungprofessionals.com/events/taiwan-centennial-celebration-badminton-tournament