I've been binge watching since March. I started on season 1, episode 1 and am now on season 9. I just watched an episode in which they elect a town mayor. However, I am a little confused. I thought that after the Ingalls moved back to Walnut Grove, the blind school moved into Lars Hanson's old house which later burned to the ground. However, in season 9, the Olsen family owns the old Hanson house and are fixing it up to sell it. Am I mistaken, or did the writers forget that the old house was supposed to have burned down?