Big lol. Doing unattended trades work is practically the definition of general AI, something we don’t see happening any time soon.
Build prefab RTMs in a factory? Today, if the desire was there. Design the house around the line and build it like a car.
Run a new circuit from the basement to an upstairs bedroom, in an old house with weird idiosyncrasies? Not in our lifetimes. The combination of mapping, movement, intuition and the fact that something is guaranteed to go wrong and likely require rethinking the whole job makes this a very hard problem™.
Believe me if someone can invent a robot that can navigate a lumpy, rat infested crawlspace and install pipe/wires/insulation the apprentices of the world will be eternally grateful