“Can’t wire a building”
Machines could cut cables to proper length, remove the sheathing at the ends and drop them in a box.
Something similar could be done for plumbing.
AI could take a picture of a house and suggest room layouts.
Once a layout is selected, components such as building plans, walls, cables and precut pipe for a house could be prepared after they are paid for.
Houses will be made differently with wiring and plumbing in the parts that will click together.