Not just the ceiling height matters. Older buildings I've been in tend to have very narrow staircases and hallways (not enough room for elbows and shoulders),

Not just the ceiling height matters. Older buildings I've been in tend to have very narrow staircases and hallways (not enough room for elbows and shoulders), light fixtures mounted directly at or below my eye level, rooms in which it would be impossible to lie down with arms above head, and/or showers that barely reach chest height. And I am not particularly tall.