In addition, major companies closed their research laboratories in some areas; vacant lots are conspicuous in other areas where facilities are no longer found, and some other areas are now being considered to be used as land for building houses instead of scientific facilities.
ほかにも、大手企業が研究所を閉鎖し撤退した地区や、施設の誘致が進まず空き地が目立つ地区、研究地区から住宅地区への変更・用途地域の変更を検討している地区もある。