I have just inspected a unit settled without pre final inspection that among many other things suffers from serious garage flooding. It’s not surprising because there is failure to design and construct proper retaining wall and the competent drainage and waterproofing

Had I been engaged to carry out stage inspection this would have been picked up early on and rectified before handover.

Now the cost of getting it fixed will greatly exceed the cost of stage inspection as a form of prevention. Also add the inconvenience to the owner.