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Harmony, Create, and Challenge
 
Architecture has a great influence on rows of houses or the climate, and occasionally may also change the environment of a community.
We aim always to be an organization which can design not only architecture, but also the surrounding space, being conscious of “architecture in the environment.”
We have the spirit of taking responsibility for the improvement of culture through architecture, and keep challenging with reliable technology based on many experiences.
 


 
 

Message From the President

Our company has continued to develop as one of the largest comprehensive architectural firm in Nagano since its foundation in 1970. We all ensure the design quality with peace of mind as a specialist group. As a group of specialists, we ensure the design quality of all of our projects, and to meet the satisfactory level of our clients. We will always aim to be an organization, which can deliver high-end design solutions not only for the architecture itself, but also for the surrounding spaces, with the awareness of “Architecture within the Environment” and work to create architectures that are more environmentally friendly. We will further strengthen our business local cities in Japan, as well as the 2 overseas bases already established in Asia where development is expected in the future.
We will continue to strive to adapt ourselves to the changing times and environment, with further improvement and challenge, and guarantee our unwavering commitment to value and quality.

Namio Sekiguchi, President

Company Profile

Company
Name
ACA SEKKEI COMPANY LIMITED
Address
Name
First-Class Registered Architect Office
Registration Nagano Head office
Registered by Governor of Nagano Prefecture (Register No. L27312)
Management Architect : Hidekuni Tatsuno
Tokyo Branch
Registered by Governor of Tokyo Metropolitan (Register No. 53789)
Management Architect : Kouji Sato
Establishment July 15 , 1970
Capital 40,000,000 yen
Employees 95(male 79, female 16)
(Total members of ACA Group 135)
Qualified
Employees
Registered Japan 1st-Class Architects/Engineers : 47
Building services architects : 4
Quantity surveyors : 12
In charge of structure : 8
In charge of mechanical and electrical design : 14
Scope of
Services
1. All services related to architecture(including planning, design, structural engineering, mechanical and electrical design, air conditioning, sanitation, interior design, quantity survey, supervision etc.)2. Urban design, urban redevelopment planning on various applications concerning development and more

3. Management and consulting (including inspection, investigation, estimation, existing building survey・seismic system diagnosis, renewal、PFI、FM、medical consulting service, etc.)

4. Environmental design and civil engineering

5. Information processing and survey using a computer(including CG、BIM、Environment Simulation )

6. Surveys for projects related to architecture

7. Overseas project (including various scope of work mentioned above)

ACA SEKKEI Organization Chart

Branch/Overseas Office

Nagano head
office
2360-4 Yanagihara, Nagano City, Nagano 381-0012, Japan
TEL. +81-26-296-8300 FAX.026-296-8350・・・MAP
Tokyo branch
office
Kanda-Ohki Bldg.9F, 3-3-5 Kandakajicho, Chiyoda-ku,Tokyo 101-0045, Japan
TEL. +81-3-5297-8177 FAX.03-5297-8176・・・MAP
Matsumoto
branch office
2-8-10 Soyano, Matsumoto City, Nagano 390-0842, Japan
TEL. +81-263-88-2224 FAX.0263-88-2237・・・MAP
Joetsu branch
office
4-3-19 Nakamachi, Joetsu City, Niigata 943-0831, Japan
TEL. +81-25-530-7130 FAX.025-530-7137・・・MAP
Ho Chi Minh
Office
12F – Havana Tower, 132 Ham Nghi Street, Ben Thanh Ward, District1,Ho Chi Minh City, Viet Nam
TEL. +84-8-3821-2332 ・・・MAP
Yangon Office No.85, 5B, Sinn O Dan Street, Latha Township, Yangon, Myanmar
TEL. +95-1-229367 ・・・MAP

History

1970 Establishment of TATSUNO MATSUYAMA SEKKEI COMPANY LIMITED
1999 change of the company’s name to ACA SEKKEI COMPANY LIMITED
2001 ISO9001 certification
2005 Participation in PFI projects
2006 Establishment of ACA TOSHIKIKAKU COMPANY LIMITED
First private placement
2007 Establishment of the Tokyo branch office
2008 The SANYU Facilities Design COMPANY LIMITED participates in ACA GROUP
2011 Transfer of management rights to ACA TOSHIKIKAKU COMPANY LIMITED
2012 Second private placement
Establishment of the
Ho Chi Minh Office

Establishment of ACA KENBI COMPANY LIMITED
2013 Establishment of the Yangon Office
Establishment of the ACA CONSULTING COMPANY LIMITED
2014 Establishment of the Matsumoto branch office and the Joetsu branch office
Agreement conclusion with DESIGN 2000 GROUP COMPANY LIMITED
Establishment of the ACA Architectural Inspection COMPANY LIMITED
2017 Opening of BIM promotion department
2018 Merging SANYU Facilities Design COMPANY LIMITED and ACA SEKKEI MATSUMOTO COMPANY LIMITED

Directors

Executive officers President and Chief Operating Officer
Namio Sekiguchi, Registered Japan 1st- Class Architect

Vice President
Yoshinori Kobayashi, Registered Japan 1st- Class Architect

Managing Executive Officer
Keiji Yumoto, Registered Japan 1st- Class Architect

Managing Executive Officer
Yoshio Sakamoto, Registered Japan 1st- Class Architect

Managing Executive Officer
Hiroaki Otani

Executive Officer and General Manager of Tokyo Branch
Kouji Sato, Registered Japan 1st- Class Architect

Executive Officer
Akira kosuda

Member of
the Board
Representative Director
Taiichi Tatsuno, Registered Japan 1st- Class ArchitectDirector

Director
Hidekuni Tatsuno, Registered Japan 1st- Class Architect

Director
Namio Sekiguchi, Registered Japan 1st- Class Architect

Director
Yoshinori Kobayashi, Registered Japan 1st- Class Architect