In my opinion yes. When you have a change of occupancy from one occupancy type to another you must meet the NEC requirements for the new occupancy type. IMHO this is no different than remodeling a building.
Chris
Check with your local building code, namely the existing building code. As indicated by Chris, it is more likely than not that all portions of the building will have to be brought to code in line with the requirements of the new occupancy type.
Actually a change from an office to a dentist office is not a change of occupancy, it's a change of use. A "B" is still a "B".
That being said, we had the same thing happen here, and no the whole building doesn't have to be brought up to code, but the areas that will be used as exam rooms do.
You are correct, I should have said a change in USE not occupancy.
Chris
:smile:Sorry, wasn't really trying to pick the fly poop out of the pepper. I just happen to be working on training that talks about electrical requirements that come out of the building code and not the NEC and how EC's need to be aware of these requirements.
My point, is that if someone called you in to do some work that could change the occupancy, then more than just an electrical permit would be required and a new C of O may also be required.
Ewww!:smile:Sorry, wasn't really trying to pick the fly poop out of the pepper.