A floor that appears to be sinking away from the wall can be a sign that there is foundation problems.
Stair step cracks through the brick, especially near a corner, are a huge clue to foundation settling. This happens when part of the wall is moving while another part is not.
Another type of crack that can happen is a vertical crack. This is an area where the wall is settling at different rates. If left untreated this could become a stair step crack and be harder to repair.