When was the original building constructed? If prior to 1975 there was no Building Code in Ontario. As Joe said, this is a bit tricky. Our job is to enforce the fire code and you won’t see installation of exit signs or most other things in there. Writing an Order under (f) is always an option, but so is an appeal by the owner. Sometimes a little education and persuasion speaking to the owner may get a voluntary installation done, but only if the project is not an expensive one. It’s easy to get someone to voluntarily add one exit sign or one emergency lighting unit, but a whole different story if the building needs 32 exit signs.
Sometimes some research into the building history helps and I usually start with original drawings from our Building Department if available. Good luck. Let us know how it turns out and what you decide to do.