Since 1986, Mori Building Co., Ltd. (Minato-ku, Tokyo; President & CEO Shingo Tsuji) has regularly conducted market surveys of demand and supply trends for 10,000m2-class or higher office buildings that were constructed in Tokyo's 23 wards since 1986 (hereinafter referred to as "large-scale office buildings"). Having just completed the tabulation of the results of our most recent survey (executed at the end of December 2012), we are pleased to present you with this bulletin report.