Century Housing System refers to a design and construction method to extend building longevity. CHS was developed in Japan by a research program of Ministry of Construction from 1980 to 1982 led by Professor Utida. CHS classifies and organizes the placement of building component systems base on modular coordination and the concept of durable years as it relates to each component group. CHS enables that components with few durable can be replaced without damaging components with longer durable years. by Prof. Dr. Stephen Kendall, Building Futures Institute, Ball State University and Kozo Kadowaki, Tokyo Metropolitan University