Out of town contractor that doesn't know the 'Chicago' ways?
We piped a couple houses up here to learn how it's done. There is way more skill required to pipe a house than to pipe a factory.
Factory installations are usually left exposed, so not much thought is given to the location of fittings and j-boxes. Houses are not usually piped, so their construction is not designed to house conduit.
I learned a lot, so did the hall and the contractors that were sure we could pipe and wire a house as fast and cheap as roping one.
Wrong!