Company name Sumitomo Seisen Co., Ltd. Representative [President and CEO] Ei Yashiro Date of establishment January 12, 1976 location [Headquarters] 1-5-1 Roppongi, Minato-ku, Tokyo 106-0032　Tel.03-3584-2461 Fax.03-3584-2544 [Osaka Branch] 4-7-28 Kitahama, Chuo-ku, Osaka 541-0041 No. Sumitomo Building No. 2 Building 6F　 Tel.06-6202-5100 Fax.06-6202-5011 Capital 480 million yen Shareholders Sumitomo Yoshizaemon ・ 19 Sumitomo affiliated companies Financial institution Sumitomo Mitsui Banking Corporation, Sumitomo Mitsui Trust Bank Acquisition, disposal and leasing of real estate Real estate management, use and land development Real estate brokerage Narizumi Building Koishikawa Building Sapporo Odori Building Caritas Yao Real estate agent 1976 years 01 May Established Sumiyoshi Club Co., Ltd. Higashi-ku, Osaka (Sumitomo Building) 1978 years 04 May Head office relocated to Kita-ku, Osaka (Sumitomo Nakanoshima Building) 1981 years 01 May Changed company name to Naruizumi Kosan Co., Ltd. 1981 years 11 May Completion of Narizumi Building 1982 years 04 May Head office relocated to Nishi-ku, Osaka ( 1st floor of Naruizumi Building ) 1984 years 10 May Opened Tokyo office in Akasaka, Minato-ku 1987 years 01 May Changed company name to Sumitomo Seisen Co., Ltd. 1987 years 12 May Renamed Tokyo office to Tokyo branch 1989 years 06 May Sumitomo Seisen Koishikawa Building completed 1994 years 05 May Head office relocated to Chuo-ku, Osaka (Sumitomo Building No. 2 ) 1995 years 03 May Caritas Yao completed 1998 years 09 May Sumitomo Seisen Sapporo Odori Building completed 2002 years 07 May Moved Tokyo branch to Roppongi Izumi Garden 2010 years 04 May Head office relocated to Minato-ku, Tokyo (inside Roppongi Izumi Garden) Renamed the old head office to the Osaka branch Narizumi BuildingKoishikawa BuildingSapporo Odori BuildingCaritas YaoBrokerage businessContact Usprivacy policy (c) 2021 sumitomo seisen kabushiki kaisha All rights reserved.