After examining the home and performing the manometer survey, Arizona Foundation Solutions believes that the home could be experiencing foundation settlement at the south west corner of the home as shown by the damage and the lower readings. The drop off in floor elevations is consistent with a settlement pattern that is common when There is earth movement below the foundation. Since the foundation rests on the soil, when the soil moves, the foundation follows. The damage in the home is consistent with the lower floor levels as well as the signs of stress. The primary goal would be to stop the foundation from further movement and secondarily then raise the foundation where the settlement pattern is located back up to the point where it functions the best.