How do you build a house without inspections... He did say 3 years ago
right..? 2004 not 1904..? Or is the house in malaysia..?

I would think if you're smart and patient enough to build a house, you
would not leave out the obvious step of fastening it to the
foundation..?

3 inches is a long way to move.. I still say this couldn' t happen
without at least one wall moving a different distance than the other
3... The op wants you to believe all 4 walls moved the same distance..??

Impossible..didn't happen..
I would imagine during construction, you'd notice you're not tied down
when you start loading up those walls and tying them together etc...