If an application has been made to the City for a development permit or a rezoning prior to a development permit, it would appear on one of these City websites:
http://former.vancouver.ca/commsvcs/.../applications/
http://former.vancouver.ca/commsvcs/...apps/index.htm
or here:
http://cfapp.vancouver.ca/planning_w...SelectTypeID=5
Until then, you'd need insider information.