I met a guy and have his card from an investment meeting by the name of Ian Scattergood that has a business called The Permit Pro.
I believe he specializes in this kind of stuff. He said he’s helped plenty of people get permits long after the work has been done, but I personally have never worked with him so I’m not going to vouch for him.
I would look him up and give him a ring if I was in your shoes.
Definitely a tough situation, but I would think the inspector’s job is to find stuff like they found at your home.
I would think this guy Ian’s job is to get you out of trouble in the least expensive way and he seemed to have been doing it a long time, but maybe you can let us know how this all pans out.