Yuudan-sha Sako Kenzan no Ie is a residential structure completed in 1983, located in Nagano Prefecture's Shimoina District in Nagato Town. Designed by the research studio of Professor Minami Sako at Kogakuin University, this house represents an important example of 1980s Japanese residential architecture. The structure exemplifies the experimental approach characteristic of academic architectural research during this period. Its design reflects contemporary interest in spatial organization and material expression. This residence serves as a significant case study for architecture enthusiasts interested in post-war Japanese domestic design and the practical applications of university-based architectural research in residential contexts.