daphne
i see a lot of posts from you. There is an old saying ” beware of what you wish for”. I think kangaroo made a similar point.
now that I have that off my chest (and please excuse my indulgence) I can provide some answer to your question regarding fire safety.
You already have found out the class of your building. The type of building you have is not subject to any fire codes. The reason is that the construction is such that fire cannot spread upwards to another dwelling, nor sideways (there are firewalls between dwellings).
you should be great full of this classification. Regardless of when your building was built, all buildings are required to comply with current fire safety rules. That means an upgrade and that is very expensive.
the building classification you have means you have minimum requirements i.e. none to meet.
Robert