Does anyone have an idea as to the type of spider this is?
Update: The Australian Museum thinks the spider may be this one.
I suspect your spider might be either Eriophora (formerly Araneus) praesignis or a close relative. It is harmless and builds a small orb web amongst lush foliage. It is not thought to be particularly common. We could be more positive of the identification however if you can supply a specimen.Here is a link. You will note that the colour is different but the species seem to be quite variable.The Search and Discover facility of the Australian Museum is a very useful service provided by the Australian Museum. Thanks for the help!