Howdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
land titles law
I asked "revenue SA" if land can be sold on indefinite sellable leases and "Department of Treasury & Finance" Reply:
Duty is liable on the acquisition of land. If you build houses on the land and rent these, there is no stamp duty on the leases.
If the land is subdivided and sold, duty will apply to the transfer.
You will need to contact other relevant departments for your queries on water, utilities etc
Sub-division advice
https://www.realestate.com.au/agent/nick-van-vliet-1958630
ask someone like this for feedback