Company overview

Company overview

Here you will find details about our team of professionals, led by a team of first-class authorized architects; our office address; and our main policies as a company.

MHS Planners, Architects & Engineers Ltd.
60 Million yen.
Registered architects:
204 First-class Kenchikushi (Registered Architect)


1-5-17 Motoakasaka Minato-ku, Tokyo 107-8448Map
Tel: 03-3403-6161 (switchboard)
Yokohama Office:
2-26-2 Tsuruya-cho, Kanagawa-ku, Yokohama 221-0835Map
Tel: 045-314-2001 (switchboard)
Osaka Office:
1-4-1 Nishihonmachi, Nishi-ku, Osaka 550-0005Map
Tel: 06-6536-3701 (switchboard)
Kyusyu Office:
1-7-14 Hakataekiminami, Hakata-ku, Fukuoka 812-0016Map
Tel: 092-433-7009 (switchboard)
Okinawa Office:
2-105-18 Izumizaki, Naha, Okinawa 900-0021Map
Tel: 098-832-0090 (switchboard)
Affiliated company
Matsuda Hirata Produce Ltd.
1-7-18 Motoakasaka Minato-ku, Tokyo 107-0051Map
Tel: 03-3403-6300 (switchboard)



President & Representative Director
Masakazu Emoto
Managing Director
Seiji Mawatari
Managing Director
Jiro Shimizu
Managing Director
Tsutomu Takeda
Tatsuo Miyata
Hidenori Kobayashi

Statutory Auditors

Statutory Auditor
Masaharu Hino

Corporate Officers

Senior Managing Corporate Officer
Makoto Tomita
Senior Managing Corporate Officer
Kazutaka Watanabe
Managing Corporate Officer
Satoru Fujimori
Managing Corporate Officer
Tatsuo Shirai
Managing Corporate Officer
Susumu Kamimura
Managing Corporate Officer
Ryu Nakajima
Managing Corporate Officer
Yoshihiro Takahashi
Corporate Officer
Yoshiyuki Tanaka
Corporate Officer
Masahiko Izumi
Corporate Officer
Shigeru Hirota
Corporate Officer
Kazuki Hayashi
Corporate Officer
Tatsuya Sato
Corporate Officer
Shin Kobayashi

Member of the Following Organizations:

  • Japan Institute of Architects
  • Architectural Institute of Japan
  • Tokyo Society of Architects & Building Engineers
  • Urban Renewal Association of Japan
  • Urban Renewal Coordinator Association of Japan
  • The Japanese Society of Soil Mechanics and Foundation Engineering
  • Japan Concrete Institute
  • Japan Sports Facilities Association
  • The Institute of Electrical Installation Engineering of Japan
  • City Planning Association
  • Japan Building Mechanical and Electrical Engineers Association
  • Japan Structural Consultants Association
  • Japan Society of Seismic Isolation
  • Public Buildings Association
  • The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan
  • Japan Facility Management Promotion Association
  • Japan Institute of Healthcare Architecture
  • Building and Equipment Long-life Cycle Association
  • The Japanese Society of Landscape
  • The Building Surveyor’s Institute of Japan
  • Japan Association of Health Services Management Consultant
  • Healthcare Engineering Association of Japan

Environmental and quality management systems

In December of 1997, MHS obtained ISO9001 (quality management system) certification. The following year, in November of 1998, it obtained ISO14001 (environmental management system) certification. We continue to revamp our systems every year.
Going forward, MHS will continue developing architectural designs that take the environment into consideration and maintain and improve the quality of edifices as we meet the diverse needs of clients.
ISO9001 quality management system

ISO9001 Quality management system

  1. 1 Authorization number
  2. 2 Company name and operator name
    MHS Planners, Architects & Engineers Ltd.
    Headquarters, Yokohama office, Osaka office, Kyushu office
  3. 3 Applicable standards
    ISO 9001:2015 JIS Q 9001:2015
  4. 4 Quality management system
    Architectural design and construction management
  5. 5 Auditor
    The Building Center of Japan
  6. 6 Date authorized
    December 26, 1997

ISO14001 Environmental management system

  1. 1 Authorization number
  2. 2 Company name and operator name
    MHS Planners, Architects & Engineers Ltd.
    Headquarters, Yokohama office, Osaka office, Kyushu office
  3. 3 Applicable standards
    ISO 14001:2015 JIS Q 14001:2015
  4. 4 Quality management system
    Architectural design and construction management
  5. 5 Auditor
    The Building Center of Japan
  6. 6 Date authorized
    November 18, 1998

Environmental and quality policy

  1. 1.By clearly defining design requirements, performing a design review and inspection, and following up with valid checks thereafter, we provide goods and services that meet clients’ requirements.
  2. 2.We endeavor to incorporate in our designs solutions to reduce environmental impact.
    (1) Prevention of global warming
    (2) Considerations for the surrounding vista and ecosystem
    (3) Energy management
    (4) Longevity of the structure
    (5) Use and reuse of sustainable resources
    (6) Use of materials with minimal environmental impact
  3. 3.Employing proactive feedback allows us to further improve the quality of our design and supervisory functions.
  4. 4.We strictly comply with all applicable legislation, statutes, and guidelines on the environmental and quality standards expected of us as a company.
  5. 5.We make continuous improvements in order to effectively employ a management system that integrally covers both environmental and quality concerns.
  6. In order to realize these policies, we ensure that all personnel understand and implement them, and we periodically establish new targets and revise them accordingly as we confirm that these goals are being met.
    May 1, 2016

Compliance initiatives

A compliant design firm

Founder Gunpei Matsuda would tell his employees: “Before you seek to be good architects, you must be men of character — you must be gentlemen.” He expected members of the firm to engage in design through a strong ethical framework. Since its founding in 1931, the firm has taken these admonitions to heart.
Seeking to codify that ethos into a code of conduct, we created a Compliance Manual in December 2001 that is used to train all personnel in ethical behavior and legal compliance.

Ethical compliance policy

  1. 1.We strictly comply with all applicable laws, statutes, and regulations.
  2. 2.We respect the position of stakeholders and maintain constructive and favorable relationships with them.
  3. 3.We recognize our social responsibility when overseeing the design and construction of projects and manage the business with sincerity and integrity.