I also enjoy seeing this. From what I see, most Aussie folks react properly. Rarely do you see frantic behavior. They seem to calmly notify the proper services and simply have the snake removed.
I'm not certain of the of the exact statistics, but a whole bunch of homes there, in various areas have "a special guest" living in their attic or garage rafters.
These snakes show an incredible amount of adaptability and adjust well to human encroachment.
Thanks for posting up!