This translation of the original Japanese notice is provided solely for information purposes. Should there be any discrepancy between this translation and the Japanese original, the latter shall prevail. July 1, 2010 REIT Issuer: DA Office Investment Corporation 6-2-1 Ginza, Chuo-ku, Representative: Yoshiki Nishigaki, Executive Director (Stock Code No.: 8976)

Asset Manager: Daiwa Real Estate Asset Management Co., Ltd. Representative: Akira Yamanouchi, President and Representative Director Inquiries to: Yoji Ueda, Director and Head of Finance Department Tel: 03-6215-9649

Notice concerning Name Changes of Portfolio Properties We hereby give notice that DA Office Investment Corporation started to change the names of its portfolio properties and has decided further details.

1. Name Changes New name Old name Date of change Daiwa Ginza daVinci Ginza 2010/9/1 Daiwa Ginza Annex daVinci Ginza Annex 2010/9/1 Daiwa daVinci Shibaura 2010/7/14 Daiwa Minami-Aoyama daVinci Minami-Aoyama 2010/7/1 Daiwa Sarugakucho daVinci Sarugakucho 2010/7/11 Daiwa A Hamamatsucho daVinci A Hamamatsucho 2010/6/30 Daiwa Jingumae daVinci Jingumae 2010/7/1 Daiwa Shibadaimon daVinci Shibadaimon 2010/6/30 Daiwa Misakicho daVinci Misakicho 2010/7/7 Daiwa Shimbashi 510 daVinci Shimbashi 510 2010/8/1 Daiwa Tsukiji daVinci Tsukiji 2010/7/4 Daiwa Tsukiji 616 daVinci Tsukiji 616 2010/8/4 Daiwa Tsukishima Shuwa Tsukishima 2010/8/4 Daiwa daVinci Azabudai 2010/6/27 Daiwa Shibuya SS daVinci Shibuya SS 2010/6/29 Daiwa Nihombashi Honcho daVinci Nihombashi Honcho 2010/7/18 Daiwa Ginza 1-chome daVinci Ginza 1-chome 2010/7/2 Daiwa Kyobashi daVinci Kyobashi 2010/7/2 Daiwa Onarimon daVinci Onarimon 2010/7/16 Daiwa Kodenmacho daVinci Kodenmacho 2010/8/5 Daiwa Jimbocho Orix Jimbocho 2010/7/7 Daiwa Kinshicho daVinci Kinshicho 2010/7/6 Daiwa Higashi-Ikebukuro daVinci Higashi-Ikebukuro 2010/6/29 Daiwa Shinagawa North daVinci Shinagawa Ⅱ 2010/7/12 Daiwa Minami-Senba daVinci Minami-Senba 2010/7/17

- End - * The Japanese version of this press release has been distributed to the Kabuto Club (TSE Press Club), the Ministry of Land, Infrastructure, Transport and Tourism Press Club, and the Ministry of Land, Infrastructure, Transport and Tourism Press Club for Construction Publications. * Website URL of the Investment Corporation: http://www.da-office.co.jp