Having bought a house seven years ago with the intention of migrating to Adelaide, things didn't happen, and we rented the house out until we sold it a couple of weeks ago.
Having had differing levels of management (mostly pretty poor), and tenants who didn't really give a damn, we sold up.
Anyone from the UK thinking of buying a property to rent out in Australia needs to look at the range of things the Landlord pays for, which is dramatically different to how it is here. The insurance costs are astronomical, with extremely poor payouts when things go wrong.
Good luck to all of you emigrating and already there. We hope it is all you hoped for.