When you have Practical completion inspection the builder has 10-15 working days to rectify any issues, if you involve a building inspector then the builder has 10-15 working days from recieving the building inspectors report.
The building inspector can go through the home before you do or after, more than likely they will pick up anything you would pick up anyway. ie more cosmetic things.

You also need to keep in mind that until your final payment has been processed your cannot collect the keys- my advice would be to put the payment in 5-7 working days before you are due back from up north that way the builder has to wait for the payment anyway before sign off and key hand over.

If you were building with Ventura Homes or Aussie Living I would of been able to help ya!

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MY11 STi R-Spec "ONALFOURS"