In home construction where one builder does dozens or hundreds of homes, are they actually using licensed electricians, plumbers, etc or do general contractors do much of that work ? You don't have to be "licensed", if I'm not mistaken to do it and as long as it passes inspection, it goes. Our house is a little over 20 years old and I've discovered a couple "issues" with the electric work. I've replaced all of the outlets with a lot of commercial-grade ones as well as all of the switches with Decora-style (including many smart switches). Downstairs, everything is great. Upstairs, I found many devices with the shepard hooks backwards or (2) wires under one screw in a few devices. Tells me a different person did some of the wiring upstairs, for sure, and yes, I fixed everything. The electric panel appears well done to me and still has the city's "inspection" tag on it.