In most places you don't need to build to code, as long as you take other steps to mitigate risk.
Saying "this entire building is designed to catch fire, and if it does, it won't do harm to neighbouring buildings, people, or the environment" is probably a good start.
Saying "this entire building is designed to catch fire, and if it does, it won't do harm to neighbouring buildings, people, or the environment" is probably a good start.