Inspector Group is the company to call!
The real estate agent provided us a inspection report from another company which was conducted in 2013.And the fact that the house was only 5 years old, he said we don't need another inspection.
But for our piece of mind we ordered Inspector Group. They were highly recommended by a friend.
I called the day before I needed their service. Although they had some tight scheduling, they accommodated my needs by moving some things around.
At the end some major structural defects were found to the roof.The inspector found some major roof structure deflections due to unusual combination of light metal trusses, with clay tiles as cover.
It turned out that the roof covering was to heavy for this kind of roof structure.
Not sure but at the end we probably saved A$25.000 - 30.000. The owner did not agree to fix it and the house ins now back on the market.

Given the premium price of his work, I had very high expectations of Inspector Groups work, and I'm happy to say those expectations have been exceeded.
We will use them for our next project again.

Great work.

Approximate cost: $700