It is entirely practical for someone with basic knowledge to prewire their own home, although it will be necessary to have all the work inspected and approved by a registered electrician before any lining is put up.
Pre-wiring is done when the framing is complete but no walls aor ceilings are lined, and involves running all the wiring of the appropriate size from the main distribution panel to the lighting points, the switch points and the PowerPoints. There are a bunch of rules and rules-of-thumb that need to be followed to do the work in a sensible, logical and safe manner, and these roles can generally be easily found in manuals and online guides.
The first task is to decide where all the light switches, power points and lighting points need to go, and to decide how they should be grouped into circuits. Power circuits require heavier gauge and more expensive cable LED lighting circuits, and it is tempting for newbies to take shortcuts with the cable running to minimise costs.
This is not sensible as by far the safest approach for all wiring is to run the wiring through the ceilings and drop the wise vertically down through the walls to the light switches and powerpoints. Will power points are nearby each other and close to the floor then it is reasonable to run the cable horizontally, but it should be run vertically for all other situations for no other reason then future homeowners will know where the cabling is in the wall if they want to hang pictures etc. Talk to plumbers Blenheim today!
A major advantage for anyone doing their own wiring is that it will generally cost a lot less, because generally your own time will be a lot cheaper then what an electrician will charge, and you won’t have to pay any markup on the materials. The net benefit for most people doing their own wiring is that they can install a lot more PowerPoints and light switching points then otherwise would be practical for the same budget when the work is carried out by an expensive registered electrician.