This study examines new value proposition presented in promoting environment-friendly residential facility. Relationship among changes in social background, consumers’ intention/ value and solar PV systems introduction is evaluated over the last decade since before the Great East Japan Earthquake.

Housing problem is one of the most basic human problems. This paper refer to primary ecological concept of the traditional local-style dwelling houses, try to find a way, put the traditional ecological concept into use for modern residential buildings, study the applicability between traditional local-style dwelling houses and modern residential buildings