A guy called Daryl left message yesterday 4.10pm got message today thanks Optus
Bit of message leaving BS ping pong and finally got hold of him.
State govt rules, not sure, generally the State Govt is concerned about remnant vegetation and generally greater than 1 hectare in size.
Asked about individual trees, waterways etc ... nothing according to them however there is some info that may help if you wish to research the 500page+ legeslative documents.
There you go, load of shit I knew it would be.
Unworkable, uncoordinanted, no logical laid out protection orders, no blanket protection orders ... basically they're just worried about land clearing.
What a joke.
He did say though that Australian Standards of pruning and any other relative state or federal rules/laws need to be up held.
So, ultimately there's no rule as to who can assess, diagnose or work on a tree, you got tree loppers advising ignorants about tree care,
as there's no rules. 
And they reckon this is the smart state.