An answer to a challange. Boaz Shuval and I were talking of models he would like to see folded. High on his list was a house with door that could open. I told him I would attempt it, and 15 minutes later, I had a working prototype that was similar to the version shown below. It was made from 8.5x11" copy paper, inaccurately folded, and utilized t*pe. Since, I have calculated correct proportions and cleaned up the folding sequance from a square of paper. This model was folded from an 8.5" Copy paper square.
Built on a 12x12 grid.