uneven terracotta work arounds for Furniture
The simplest way to install cabinets on an uneven floor is to construct a platform with 2 x 4 lumber. This is best when all or most of you cabinets will be located along the same walls. If you construct the platform so the 2x's are oriented "face-down" (not on edge) there will be more head room on top of the cabinet. Once the platform is in place level it with shims starting at the lowest point on the floor.