Apparently not! A story went around our offices years ago about the newest building we were occupying, it apparently had a 13th floor marked as such. Not unheard of but still rather uncommon, anyway one of the bigwigs office was supposed to be on that floor. He threw a hissy fit supposedly and had them move the entire department two floors up which of course caused rebuilds on 2 different floors and cost a small fortune all so he would not be on the 13th floor.