While this wooden prefab structure does collapse into a cargo container-sized unit for portability, once shipped it barely resembles its origins. In fact, with volumetric extensions at well-chosed intervals and a facade with varying visual rhythms and physical textures, the Drop House looks very much like any high-quality, site-specific modern wood-and-glass home might.    The interior tells a similar story. The static, continuous lines of the original linear box form are broken up by…