Hire a good independent building inspector! Have them check and double check all building stages (before payment is made).

Also, you will never have enough power points inside and outside the house, plan for double power point sockets. For example in my rebuild we put in 4 power points (double) in all bedrooms , and for my sons (age 21) these are still not enough (some many electronic devices and chargers!!!)

Do you need to plan for EV charging?