I did the 1year fully online 'Diploma of Property -Agency Management' in less than 3 months whilst working full time. If your dedicated then you can do it faster.
note: I have no prior realestate experience except buying IPs.
You can do it online via Kaplan or your local reiwa. Com. Au learning
There's 3 levels
Sales Representatives
Business agents
Licensee
The first level should only take you 2 weeks online
