I’m in NY, US and and the proper permit was pulled for the job, as well as hiring an independent inspector to check the work when finished. My particular electrician has been doing business for ~30 years so I doubt he’s risking violations over things like that, plus he would have to be colluding with the inspector. He already did an inspection of the work needed and planned it, it would be impossible for him to suddenly notice other things that need to be done.

The price I’m paying for this job lines right up with the national job average pricing you can find online. If it was common to require doing all of that extra code updating I would think the average price should be much higher.

Maybe I’m wrong but my thought is that it isn’t so black+white and some electricians may push upsells harder than other more honest ones.