Plantec is an organization with expertise in the fields of architecture, consulting, and creativity.
Plantec has nearly 40 years of experience in Japan and over 20 years of experience in ASEAN, with local subsidiaries in Vietnam (Ho Chi Minh City, Hanoi) and Thailand (Bangkok).
In 2025, we’re further expanding our global reach with the establishment of offices in Mexico and Singapore.
Optimal cost management based on our overseas experience
Superior quality equivalent to
that of Japan
Planning with full knowledge of local laws and regulations
Proposes optiamal solutions aligned with local needs, cost efficiency, and the client’s future vision
Competative cost advantage over Japanese affiliated firms and general contractors
Superior proposals developed in collaboration
with Japan -based Plantec
By conducting a Basic Design before deciding on a general contractor, we can scrutinize the details of the design, clarify the overall cost, and manage the appropriate cost until the completion of construction. Minimize additions and changes at the Construction stage.
We, Plantec, as a member of the global community, believe that our mission is to contribute to the realization of a better society. If we can not contribute to achieve a better society, there is no significance to our existence.
In order to contribute to society, we need to take action against these diverse challenges such as the global environmental issues, economic stability, responding to globalization, cultural inheritance, countermeasures against international conflicts and disasters, convenient living society through digitalization such as AI, creating a society where people with diversity and backgrounds can work and live together.
Currently, Globalization is accelerating. On top of that, Japan’s national power is declining relatively, not only are Japanese companies expanding overseas, but foreign companies are also increasing their investment in Japan, and internationalization is also progressing domestically.
Under these circumstances, we will be mindful of the whole world and even the universe, take on new challenges, continue to grow, and contribute to society.
Plantec, Inc. (Global Headquarters)
Chief Executive Officer Naoyuki Koyama
Plantec expanded business to Vietnam in 2011, established a subsidiary in Thailand in 2012, and has implemented several innovative architectural design projects mainly in ASEAN countries and also the United States and Mexico. In February 2025, we established a subsidiary in Mexico.
Compared to other major design firms, our key strengths are our extensive experience overseas for more than 10 years and our ability to make proposals based on our deep knowledge of various local conditions, not just support from Japan.
Going forward, we will continue to focus on supporting the facility strategies of Japanese companies’ expansion to overseas bases, and support establishing foreign companies based in Japan. We will propose architectural design solutions that will solve social issues in countries around the world.
Plantec, Inc. (Global Headquarters)
Executive Officer in charge of Overseas Management
PLANTEC ARCHITECTS COMPANY LIMITED (Vietnam)
President Hiroyuki Tsurumi
Our company has been operating in Vietnam for over 10 years, responding to a wide range of client needs—not only in architectural design and supervision but also in interior design and urban master planning.
With offices in both Ho Chi Minh City and Hanoi, we cover Vietnam’s rapidly growing market while engaging in numerous unique projects, including urban master plans and the design of commercial facilities that serve as key infrastructure elements, reflecting Vietnam’s distinct originality.
PLANTEC ARCHITECTS COMPANY LIMITED (Vietnam)
General Director Akihiro Kazama
