Reno: Used to be years back that Elizabeth, Nj had a 'no NM local rule. They also had a requirement for "pre-inspections" before they issued any permits.
All of that was sent 'bye-bye' with the adoption of the statewide Uniform Construction Code (UCC aka 5:23 et al) That is supposed to put everyone on the same page.
Back to this topic, I suggested to the OP to contact the local AHJ & check local codes. Illinois is a big state.
