Working as contractors for our own project is our latest adventure. So this time, not only the art or process of building is in our hands, but the act of physical construction, as well. ¶ This is a single family house project. Quite a large one, something over 5 thousand square feet, site is narrow and long, and sloped towards the south. Two different schemes superimposed one on top of the other: a longitudinal one, based on spatial forking, and the other underneath, based on finger-like configuration. Other important things are the growth against the slope, or permeable skins that thicken space boundaries.