There are three levels of checks that need to be done.
The first, by an inspector employed by the lot owner, should be a check of fixtures, fittings and finishes in their own lot that they can demand the builder fixes there and then.
They should also note issues with common property – ceilings, walls, floors, windows, balconies, front door etc etc – that they can report to the Owners Corps when it is formed.
The next level is non-major defects and major or structural defects and there will be an item on the agenda of the first AGM to ensure the Owners Corp at least considers having a professional inspection done ( and they would have to be totally insane not to do so).