I'll be convinced they can fully replace most trade work when they figure out fine motor control and finally build servo or hydraulic systems that don't act all janky and with slop a mile wide. When they can strip a wire, and then terminate it into a screw terminal, and then install an outlet in the wall. All with one robot, using each tool as needed as finely tuned as a human would do it. And also being able to adapt to different situations on the spot. For instance "shit, the hole for the outlet overlaps a stud, wtf do I do to fix this" type stuff.
From what I've seen even from the best like Boston Dynamics, there are still many decades to go before we have fully capable robotic trade workers.
tekcaj