Looks to me like the crane driver was incompetent/reckless, but why did the developer build a house so close to a 150 yr old tree (or however old it was at the time)?
It looks to me like they needed the crane to stop the heavy bows of the tree falling on the house, but the chainsaw man chopped off more than the crane could handle.
The clean slice through the building just shows you how flimsy and insubstantial those houses are.

