As for the leach field, there are ways they can detect those, by doing a radio controlled device flushed down the toilet and following it to see where it goes, etc.

We immediately hired a professional mold inspector and confirmed very small and normal amounts of mold detected in the laundry room.

He is a former detective turned real estate investor with over 70 SFRs. 

@Tyler Mullen you think like a detective, well done.

I am a licensed private detective here in NJ.

If yes, if the $3.25m at Bank A was actually a collateral account for which the borrower had already pulled down $3m of credit, would Lender B have a way of detecting that other, or would they rely on representations from the borrower?

This makes it very easy to detect a difference.

Sometimes deals are too good to be true, make sure to do your detective work.

If there story doesn't make sense, get on your detective hat.

houses aren't usually built with a "slope," and you can't always detect foundation issues from the outside...