We are planning on remodeling. We will be expanding an attached garage and turning the garage roof into a roof deck with a set of outside stairs. We will be cutting through the 2nd story wall and putting a door into the 2nd story.
We would like to remove the internal staircase to the 2nd story and install an elevator and use some of that footprint for an expanded-accessible bathroom. The question is, if you have an external stair case, does one have to have an internal one as well?