Wat House is a four-unit residential complex completed in 1977 in Minami-Shirashio, Iwaki City, Fukushima Prefecture. Designed by Takashi Azuma Architectural Research Institute, this modest yet thoughtfully conceived project exemplifies the modernist approach to residential design during Japan's post-war construction boom. The building demonstrates careful spatial planning and material expression characteristic of the period. As a compact multi-unit dwelling, Wat House represents an important study in efficient urban housing solutions. The project offers valuable insights into residential architecture of the 1970s and the pragmatic design philosophy that addressed Japan's evolving housing needs during this transformative era.