The Minka Saisei Keikaku is a residential project completed in 2005 in Hiroshima Prefecture that exemplifies sustainable architecture through the thoughtful renovation of a traditional Japanese farmhouse. Designed collaboratively by architect Hakushi Sanbuichi, the Kure National College of Technology's Tomita Laboratory, and Kazuhide Doi, this project demonstrates a commitment to preserving vernacular heritage while integrating modern environmental design principles. The renovation showcases innovative approaches to energy efficiency and spatial adaptation, making it a significant case study for architects interested in heritage conservation and contemporary sustainable residential design practices.