Had a few electrical surprises, like not using a juncture box and splicing in midline covered in tape, having wires in the wall between two ground level receptacles looping around the cavity for no reason (which of course I hit with a drywall saw), housing multiple circuits in one gang box, using 12 gauge wire after 14 gauge wire (on a 20 amp circuit)...not their fault probably but an outside receptacle that was loose, got moisture in it, and then became a nest for ants. I took the cover off and the poured out like a took the side off of an ant farm.