Ibaraki Prefectural Sanden Housing Complex is a significant example of 1970s Japanese residential architecture, completed in 1978 in Katsuta, Ibaraki Prefecture. Designed through a collaborative effort by Shiba Architectural Design Office and Gendai Keikaku Kenkyusho, this public housing project represents the modernist approach to collective residential design during Japan's period of rapid urban development. The complex exemplifies the functional principles and spatial efficiency characteristic of mid-century Japanese public housing, offering valuable insights into prefectural-level architectural planning and community-focused design strategies of that era.