Sorry you are having this problem. Don't know if I can help but if you don't mind, I'll ask some questions and see if I have run into this problem before.
Is it the house only that you are trying to map or is there land along with the project? How much land if land is involved. You say you flew at 66 then 130ft. Did you make one flight or more than one at each altitude? Did you shoot totally in nadir or did you add obliques or did you use totally obliques?
I'll try to help if I can.