Contribute to society through exciting urban planning and architecture
Our mission is to contribute to society through exciting urban planning and architecture. We are committed to creating varied experiences for the users of our developments while employing environmentally conscious and sustainable design to help establish a safe and comfortable world for future generations.
We have completed numerous international projects with designs based on our combined experiences of both Japanese and American culture. Drawing upon the creative talents and international savvy of our team, we seek to contribute to the enhancement of the built environment and to the creation of cities and architecture worldwide.


Encounter with Cesar Pelli
I met my mentor Cesar Pelli when I was studying for my masters at Yale University and I saw the post-modern architecture of 1980s America right in front of me in Cesar’s office, which became the foundation of my design activities. Being able to open my own office in Japan began from when I met him.
What is the purpose of architectural design? —
The purpose is to make towns joyful and affluent, and give them a pleasurable quality and security. It’s based on my mentor Cesar Pelli’s philosophy of “DESIGN ON RESPONSE” and is what I aim to create; drawing from the architectural education I received from him and the work collaborations from before. DESIGN ON RESPONSE is responding to the local culture and township, and create designs which grow with the town like a living entity. With this philosophy in mind, design is carried out with accurate insights into the surrounding natural environment, township, culture, history, people using the building and various other design conditions. Just as the design philosophy was passed from Eero Saarinen to Cesar Pelli, I was also passed the philosophy from Pelli and would like to expand, develop and pass it on in my own way to the next generation. I think getting involved in creating towns and architecture which last for many generations is the mission of all architects.
Opportunities to get involved in a lot of projects outside of Japan have increased in recent years. I have been able to see that there aren’t many differences in the basic conditions relating to what makes people feel happy beyond the frame of culture and tradition. Abundant and beautiful nature, lively towns and architecture with secure and rich expressions, can continuously provide universal value beyond the country’s borders and generations. We, as specialists in creating cities and architecture, would like to respond to our clients’ needs and the expectations of the society with our best efforts.
I met my mentor Cesar Pelli when I was studying for my masters at Yale University and I saw the post-modern architecture of 1980s America right in front of me in Cesar’s office, which became the foundation of my design activities. Being able to open my own office in Japan began from when I met him.
What is the purpose of architectural design? —
The purpose is to make towns joyful and affluent, and give them a pleasurable quality and security. It’s based on my mentor Cesar Pelli’s philosophy of “DESIGN ON RESPONSE” and is what I aim to create; drawing from the architectural education I received from him and the work collaborations from before.
DESIGN ON RESPONSE is responding to the local culture and township, and create designs which grow with the town like a living entity. With this philosophy in mind, design is carried out with accurate insights into the surrounding natural environment, township, culture, history, people using the building and various other design conditions.
Just as the design philosophy was passed from Eero Saarinen to Cesar Pelli, I was also passed the philosophy from Pelli and would like to expand, develop and pass it on in my own way to the next generation. I think getting involved in creating towns and architecture which last for many generations is the mission of all architects.
Opportunities to get involved in a lot of projects outside of Japan have increased in recent years. I have been able to see that there aren’t many differences in the basic conditions relating to what makes people feel happy beyond the frame of culture and tradition. Abundant and beautiful nature, lively towns and architecture with secure and rich expressions, can continuously provide universal value beyond the country’s borders and generations. We, as specialists in creating cities and architecture, would like to respond to our clients’ needs and the expectations of the society with our best efforts.

| Company Name |
Jun Mitsui & Associates Inc. Architects |
|---|---|
| Address |
HEAD OFFICE Lexington Plaza Nishi-Gotanda 3F TEL : +81-3-3491-0419 / KANSAI OFFICE Optec Daiei Bldg. 7F TEL : +81-6-4708-7108 / IWAKUNI OFFICE Fuji Bldg. 2F TEL : +81-827-30-6960 / |
| CEO | Jun Mitsui |
| Established in | 1995 |
| Capital | ¥51million |
| Business Registration | First-class architect office Tokyo Governor Registration No. 041227 |

| Company Name |
Pelli Clarke & Partners Japan, Inc. |
|---|---|
| Address |
Lexington Plaza Nishi-Gotanda 3F TEL : +81-3-3491-0417 / |
| CEO | Jun Mitsui |
| Established in | 1992 |
| Capital | ¥12million |
| Business Registration | First-class architect office Tokyo Governor Registration No. 035602 |
Human rights policy
We do not tolerate any discrimination based on nationality, race, sex, age,
religion or any other grounds, and will comply with the human rights declaration in our business activities.
We also do not tolerate any harassment and will strive to create an environment where all individuals are respected.
Lexington Plaza Nishi-Gotanda 3F
5-2-4 Nishi-Gotanda,
Shinagawa-ku
Tokyo 141-0031 Japan
TEL:+81-3-3491-0419
Optec Daiei Bldg. 7F
2-1-29 Temma,
Kita-ku Osaka-shi,
Osaka 530-0043 Japan
TEL:+81-6-4708-7108
Fuji Bldg. 2F
1-1-17 Imazumachi
Iwakuni-shi
Yamaguchi 740-0017 Japan
TEL:+81-827-30-6960