In Australia for example you can't do your own (unless you are an electrician). Imagine if you buy a house with faulty electric work, you can't "see" it or even

In Australia for example you can't do your own (unless you are an electrician). Imagine if you buy a house with faulty electric work, you can't "see" it or even reasonably check it all in a building inspection. These kinds of regulations are lifesavers.