| Architect |
| Professor Emeritus School of Science and Engineering, Waseda University. |
| 1928 | Born in Tokyo, Japan |
| 1951 | Bachelor of Engineering, Department of Architecture School of Science and Engineering,Waseda University. |
| 1953 | Master of Engineering, Department of Architecture School of Science and Engineering, Waseda University |
| 1953-56 | Designer in Toshiro Yamashita Designing Office. |
| 1956-65 | Affiliated with Kenji Imai Laboratory,Waseda University. |
| 1956-66 | Lecturer,Department of Architecture School of Science and Engineering,Waseda University. |
| 1956-65 | Lecturer,Tama University of Fine Arts. |
| 1966-71 | Associate Professor,Department of Architecture School of Science and Engineering,Waseda University. |
| 1975-78 | Lecture,Tokyo University. |
| 1971-95 | Professor,Department of Architecture School of Science and Engineering,Waseda University. |
| 1988- | Established Y.IKEHARA Architect & Associates. |
| 1989- | Member of The Japan Arts Academy. |
| 1992- | Professor Emeritus of Architecture,Chongqing JIAN ZHU University. |
| 1995- | Professor Emeritus,School of Science and Engineering,Waseda University. |
| Fontivegge Business Center International Design Competition: | First Prize(1970) |
| Ossuary and Chapel for The Tokorozawa Seichi Cemetery: | The prize of the Architectural Institute of Japan(1974) |
| Ohmiya Building[Watanabe Residence]: | First prize in Kanagawa Prefecture Architecture Competition.(1974) |
| Seibu Lions Baseball Stadium | Japan Lighting Institute Award.(1979) |
| Seibu-en Amusement Park | Commercial Environment Design Award(1985) |
| Waseda University-School of Human Science- | The Prize of The Japan Art Academy.(1988) |
| The OKUMA Memorial Academic Prize.(1988) | |
| The Building Constructors's Society Prize(1988) | |
| Japan Sign Design Award(1998) | |
| Seibu-en Amusement Park Restaurant "Mon Vert" | Commercial Environment Design Award(1988) |
| Company Residences in Higashiohji for Mitsubishi Chemical and Industries Co.Ltd. | Kitakyushu Architectural Award(1987) |
| Kitakyushu Prince Hotel | Kitakyushu Architectural Award(1989) |
| The Building Constructors's Society Prize(1990) | |
| Japan Lighting Institute, Lighting Popularization Award(1990) | |
| Prize in the National Contest for Superior Interior Works(1990) | |
| Shop System Competition,Award of Excellence(1990) | |
| Kikusui-tei | The Building Constructors's Society Prize(1992) |
| Commercial Environment Design Award, Award of Excellence(1992) | |
| '91 Saitama Scenic Award(1991) | |
| 10th Nashop LIGHTING CONTEST, Golden Prize(1992) | |
| Shop System Competition,Award of Excellence(1992) | |
| Kurosaki Techno-Plaza I | Kitakyushu Architectural Award(1994) |
| Asakura Isokichi Museum | Chubu Architecture Award(1994) |
| Design Proposal for the Kumagaya City Second Cultural Center | Best Proposal(1994) |
| Design Proposal for the Kameoka Lif-long Learning Center | Best Proposal(1994) |
| Hiroshima Prince Hotel | Hiroshima City Development Design Award(1994) |
| Commercial Environment Design Award(1995) | |
| The Building Constructors's Society Prize(1996) | |
| Toyama Prefecture General Welfare Hall Design Competition | Best Proposal(1995) |
| Main Building,Kitakyushu University | Kitakyushu Architectural Award(1996) |
| The Building Constructors's Society Prize(1997) | |
| Sakata City Museum of Art | The Yamagata Governor's Award for Scenic Design(1997) |
| 1967 | Nakayama Residence(Shizuoka Pref.) |
| 1970 | Gankutsu Hall of Oni-Oshidashi National Park(Gunma Pref.) |
| 1970 | Shirahama Junior High School(Chiba Pref.) |
| 1970 | Plan for Hakone International Tourist Center design Competiton(Kanagawa Pref.) |
| 1971 | Plan for Fontivegge Business Center International Design Competiton(Perugia Italy) |
| 1971 | Gymnasium for Nagao Elementary School(Chiba Pref.) |
| 1973 | Ossuary and Chapel for The Tokorozawa Seichi Cemetery(Saitama Pref.) |
| 1973 | Ohmiya Building [Watanabe Residence](Kanagawa Pref.) |
| 1974 | Plan for Ashigakubo Rest House(Saitama Pref.) |
| 1974 | Oiso Long Beach(Kanagawa Pref.) |
| 1974-79 | Basic Design and Execution Drawing of Tokorozawa Baseball Stadium(Saitama Pref.) |
| 1975 | Plan for Kamioka New City Hall Building Design Competiton by Nomination(Gifu Pref.) |
| 1977 | House in Katsuura(Chiba Pref.) |
| 1977 | Plan for Myofuku Temple(Tokyo) |
| 1978 | House in Seijo(Tokyo) |
| 1979 | Seibu Lions Baseball Stadium(Saitama Pref.) |
| 1980 | House in Tateshina (Nagano Pref.) |
| 1980 | House in Hamamatsu(Shizuoka Pref.) |
| 1981- | Seibu-en Amusement Park(Saitama Pref.) |
| 1983 | Gymnasium for Nihon Gakuen High School(Tokyo) |
| 1983 | New Ward of Shioda Hospital(Chiba Pref.) |
| 1983-84 | Seibu-en Amusement Park "Surf Pool" & "Streamy Pool"(Saitama Pref.) |
| 1985 | Seibu Railway Company,Facilities of New Traffic System-Yamaguchi Line-(Saitama Pref.) |
| 1986 | House in Matsugaoka(Sitama Pref.) |
| 1987 | Company Residences in Higashiohji for Mitsubishi Chemical and Industries Co.Ltd.(Fukuoka Pref.) |
| 1987 | Waseda University -School of Human Sciences-(Saitama Pref.) |
| 1987 | Study Room for Prof.Shimizu(Nara Pref.) |
| 1988 | Seibu-en Amusement Park Restaurant "Mon Vert"(Saitama Pref.) |
| 1988 | Seibu-en Amusement Park Restaurant "Poppo"(Saitama Pref.) |
| 1988 | Hakone Yunohana Onsen Hotel(Kanagawa Pref.) |
| 1989 | Kitakyusyu Prince Hotel(Fukuoka Pref.) |
| 1989 | Seibu-en Amusement Park "Seibu-en Pool Restaurant" (Saitama Pref.) |
| 1990 | Nakamura Residence(Saitama Pref.) |
| 1990 | Waseda University Tokorozawa Sports Hall(Saitama Pref.) |
| 1990 | Kikusui-tei(Saitama Pref.) |
| 1991 | Design Competition for the Reconstruction of JR Kyoto Station by nomination(Kyoto Pref.) |
| 1991 | Club House in Seibu-en Golf Course(Saitama Pref.) |
| 1991 | Waseda University Aqua Arena(Saitama Pref.) |
| 1992 | Student Lounge/Waseda University Tokorozawa Campus(Saitama Pref.) |
| 1993 | Kurosaki Techno-Plaza 1(Fukuoka Pref.) |
| 1993 | Design Proposal for the Ibaragi Prefectural Hall Building(by nomination, Ibaragi Pref.) |
| 1993 | Asakura Isokichi Museum(Ishikawa Pref.) |
| 1993 | Dinosaur Expedition Pavilion,UNESCO Village(Saitama Pref.) |
| 1994 | Design Proposal for the kumagaya City Second Cultural Center(by nomination ,Saitama Pref.) |
| 1994 | Design Proposal for the Kameoka Life-long Learning Center(nomination,Kyoto Pref.) |
| 1994 | Kumamoto Pepole's General Sports Park Indoor Sports Area Design Competiotin(by nomination,Kumamoto Pref.) |
| 1994 | Hiroshima Prince Hotel(Hiroshima ,Pref.) |
| 1995 | Esquisse Proposal for the Basic Plans of the Musashino-no-mori General Sports Facilities(by nomination,Tokyo) |
| 1995 | Esquisse Proposal for the Musashino-no-mori Stadium(by nomination,Tokyo) |
| 1995 | Kitakyushu University(Fukuoka ,Pref.) |
| 1995 | Proposal for the Gifu Lodgings Redevelopment Plants(by nomination,Gifu Pref.) |
| 1995 | Toyama Prefecture General Welfare Hall Design Competition(by nomination,Toyama Pref.) |
| 1995 | Rocker House in Oiso Long Beach(Kanagawa Pref.) |
| 1995 | Club House of the Iwate Numakunai Country Club(Iwate Pref.) |
| 1996 | Hakone Glass Forest(Kanagawa Pref.) |
| 1996 | Esquisse Proposal for the Basic Design of the Musashino-no-mori Sports Facilities(by nomination,Tokyo) |
| 1996 | Esquisse Proposal for the Fureai Koryu Plaza in Nyuzen City,Toyama Prefecture(by nomination,Toyama Pref.) |
| 1997 | Proposal for the Basic Design of the Karato Fish Market(by nomination,Yamaguchi Pref.) |
| 1997 | Sakata City Museum of Art(Yamagata Pref.) |
| 1997 | Club House of Yoshii Nanyoudai Golf Course(Gunma Pref.) |
| 1997 | Club House of Miyazaki Huga Golf Course(Miyazaki Pref.) |
| 1997 | Karuizawa Prince Bowl(Nagano Pref.) |
| 1997 | Seibu-en Amusement Park"Water Slide"(Saitama Pref.) |
| 1997 | Seibu-en Cycling Stadium(Saitama Pref.) |
| 1997 | Kumagaya Bunka Souzoukan(Saitama Pref.) |