The fact that all three engines seen in the pictures show little to no rotational damage has me puzzled.
Even at idle RPM I would expect to see more damage done, either by flattening of the fan case on impact, or by dirt and debris being ingested.
Did you note the severe fan damage to the 4th engine as well? That appears to be the cacass without a fan case visible.
So what does hitting a house do to an engine?