I’ve never done a sub-division, but my father is currently doing one and I’ve helped him out a bit… not in Melbourne though.
Basically, in the area I looked at, the local council had all their fees outlined on their website. From there you could even call the council and get a better idea of their cost and whether your broad plan would be approved. After that you can get quotes from draftsman / architect / builders / etc to figure out how much it would cost.
This reply was modified 6 years, 6 months ago by TheNewGuy.