1948 - 1980

1948

Osaka Architectural & Engineering Firm, Inc.established by a group of engineers and architects from the former Sumitomo Real Estate Building., Co., Ltd. and Nippon Engineering Co., Ltd.

1949

Headquarters moved to Kyomachibori, Osaka (current Osaka Office).

1950

Nagoya Office established.

1951

Obtained a patent for a floating-foundation soft subgrade system with a high groundwater level, which takes buoyancy into account.

1954

Tokyo Office established.

1955

Developed an innovative all-welded construction method.

1956

Kyushu Office (predecessor of Fukuoka Office) established.

1963

Joint Development with Kubota Tekko K.K. Developed a process to make steel tube columns named 'G-column', which involves using centrifugal force on hot material.

1967

Developed a steel structural system named a 'keel structure', using a big main girder on a top roof, via which all roof structures are suspended.

1971

Company renamed DAIKEN SEKKEI, INC.

1978

Head office moved to Tokyo

1981 - 2000

1982

Overseas Facilities Dept. became independent.

1984

Yokohama Branch established.

1987

Fukuoka and Sapporo Offices established.

1989

Hiroshima Office established.

1990

Sendai Office and Kyoto Branch established.
DAIKEN SEKKEI Osaka Building completed.

1993

Plant Engineering Dept. became independent.

1994

DAIKEN SEKKEI Tokyo Building completed.

2000

Obtained the ISO9001 quality management system certification.

2001 - 2020

2001

Medical Dept. became independent.

2003

Shizuoka Branch established.

2004

Corporate/Design/Ethical Philosophies established.

2012

Agenda 2012 established.

2015

Agenda 2015 established.

2018

Celebrated the 70th anniversary. Agenda 2018 established.

2021 -

2021

Agenda 2021 established.