Zip, zero, none.

We discovered on our first night in the house that there isn't a stitch of insulation in the place. We were laying in bed, about to fall asleep, when we heard voices, voices that seemed to be in our living room. But, no! The voices were coming from some people two houses down who were standing on the sidewalk. No big deal, right? The summer in the house was unbearably hot, and the winter was absolutely freezing. On winter mornings, it was often warmer outside than in. It was semi-exciting to rip open the walls and finally see what was causing all of that discomfort. Zip, zero, no insulation.