I need help,... We have a 3- family house and we are going to give the 1st floor to my mother inlaw,.. And we are going to take the 2nd and 3rd floors and make it into one,.. But how do we make the stairs going from the 2nd floor to the 3rd floor inside stairs with out cutting a hole in the floor and going from insde to inside,.. I would like to use the stairs that are in the hall, as the way for us to get to the 3rd floor, with out going outside in the hall,....we have stairs in both the frount and back of the house,... I would like to use the stairs in the frountas the stairs going to the 3rd floor from inside the house. I understand I can cut a hold in the wall and make it an entrains but how would I close in the stairs from the 2nd floor to the 3rd floors so that it will be inside my house.??????????????????? help.