Why would a health code read squat about ADA? But both codes must be complied with before a c/o is issued. Someone suggested expanding two bathrooms into one. I pointed out that the plumbing code does require separate bathrooms in food service establishments. So that suggested solution to meeting ADA may put her bump up against another code. She has to meet both. Local jurisdictions may adopt changes such as yours did. But not all of them do.
The requirements for construction were very likely clearly put on any plan review for the person who pulled the permit. The restaurant seating should have been on the plans if it was fixed seating.
An inspector does not have to do a punch list for contractors. They can simply cite the code violation without going into detail. They sure as heck do not have to tell a contractor how it must be fixed. They fix it to meet the code. Plan reviews will have more detailed corrections.
The fedgov doen’t send ADA inspectors around to check out new business. So what agency did the inspector come from?
If the inspector didn’t give the business owner any paperwork regarding codes and compliance then the whole thing is suspect.
They can’t just walk in and tell you to change something or else without documentation if for no other reason than they can’t enforce their warning if they didn’t document it with dates. Due process and all. And it has to be signed by the business owner or manager as well as proof of service