@dostovel — I think having a staircase on the second floor would be a waste of space and not necessarily structurally sound. I would suggest replacing that staircase with a ladder instead, either at a steep angle or bolted flat against the wall. That way the vendor would have more room to (pardon the pun) mill about and not waste his precious floor space on such a luxury in what if a heavy working environment. If that makes sense.
