I have a bathroom permitting issue - need help!

[Wa Chan]

Hello everyone,

Hoping to hear from others’ experiences as I’m a little stressed here. I moved into my home earlier this year. It is listed as a 1.5 bath on city records, however the half bath has a toilet, sink and a standing shower so is technically 3/4 bath. I just had a plumbing company repipe all the supply lines and drain pipes. The inspector (I got permits) came today and asked if the bath in question is permitted. He also mentioned there is no vent fan which I’m going to install. I only see a record of a permit from few years ago saying the bath sink was replaced and that’s the only permit I see for the bathroom. It looks like the previous owner installed the shower without getting permits. The inspector will return in the next few days after doing some “research.” What are some scenarios that may happen? I’m guessing he is going to require proper permitting for the bath now. What does this entail? Will I need new mechanical, electric and additional plumbing permits? Worried about how much this will cost. Any help/insight is appreciated. TIA!