Completed in 1998, Material Experiment 40―I's case stands as a compelling example of contemporary Japanese architecture that seamlessly integrates residential and commercial functions. Located in Kawazu Town, Shizuoka Prefecture, this project by Suzuki Ryoji Architects demonstrates innovative approaches to material expression and spatial design. The building exemplifies the architect's characteristic exploration of materiality and structural clarity, creating a distinctive dialogue between its utilitarian purpose and refined aesthetic sensibility. This work represents a significant contribution to late twentieth-century Japanese residential architecture, offering valuable insights into sustainable design practices and the integration of commerce within domestic environments.