I lived in Canada from 1st Jan - 18th Nov on a working holiday visa, still have my banks, would I be classified as a non- resident or resident? Now is Aus on work visa.

If you are unsure of your residency status, you will need to contact the Canada Revenue Agency (CRA) and confirm it with them. 

If you are in Canada or the United States, you can call the CRA at 1-800-959-8281. If you are elsewhere, you can call 613-940-8495. This page has more ways to contact the CRA: Contact the Canada Revenue Agency