I was going to say roughly the same thing.. Building bad foundations happens all the time and it seems less critical in a traditional house, but.. I know many

I was going to say roughly the same thing.. Building bad foundations happens all the time and it seems less critical in a traditional house, but.. I know many houses that had incompetent foundation builders. The repair costs/complexity can be similar to the underground house even though the priority seems low in a traditional house. One of the houses was torn down due to the neglecting the problem. (It was a rental and no one cared about using the basement for the decade before it was inspected and condemned.) In the underground case you really only have to get one thing right and it is just as stupid to get it wrong in the traditional case, but people are distracted and don't see it's priority.