Yes, we are pretty lucky, but also have to keep an eye when you go to buy that you inspect anything added though since you know it was not inspected.
I will be replacing the cast iron drain pipes under my concrete slab at some point in the future, and I know that it won't have to be inspected. My plumber was at my place two weeks ago and told me that many jobs he goes to in county have things that are out of code, especially when it comes to venting and septic.