Like the previous poster said, getting into the nursing program at BCIT isn't really a transfer. Once you have met their prerequisites, you can apply to start level 1. For volunteer experience, healthcare related is obviously preferred but I don't think it's required. When I applied I had to list 3 positions that I've held along with a description of the skills and responsibilities for these positions. They could be work or volunteer positions. Even retail or waitressing is good experience. However, the program is competitive so I would highly suggest volunteering in the hospital or a nursing home (most of the people in my cohort have some sort of healthcare related experience). Anything with children or seniors would look good.
In terms of grades, BCIT does list the minimums they are looking for on the nursing program website, but aim higher... As I said, it's competitive. I had A/A- in the prerequisite courses.
Also keep in mind that BCIT does not accept midterm grades for the prerequisite courses. You have to complete the course before you apply to the program. So if you're taking prerequisites in the Jan-April 2017 semester, the earliest you could start is January 2018.
I don't know anything about UBCO so I can't help with that unfortunately. Let me know if you have any other questions about BCIT