I have an unoccupied space on roof that exists to give the impression that there is a second story as viewed from the street. There are windows to the exterior in the space, some finishes on the walls if they can be seen from outside, some light fixtures, maybe some ductwork, but no equipment and no reason to access the space except if a light goes out, etc. The space has limited height and once you take into account a curb, I can only get a 6'-0" 'door', i.e., access panel. I believe this...