I performed a pre-sale inspection on a house that has a garage below the house with a staircase that is open and has a door at the top of the stairs. My concern that I noted in the report is that the underside of the stairs were not drywalled and the sides. My thinking is that a fire could quickly travel up the stairs to the dwell above. They hired a contractor to perform the repair that I mentioned and he is calling them into question. Any thoughts?