It is listed on the Tokyo Stock Exchange and is one of the Nikkei 225 corporations.

In 2018, Obayashi was ranked 15th place on ENR's list of Top 250 Global Contractors,[4] the highest rank among Japanese Contractors.

[5] Established in 1892 in Osaka, the company operates in Japan and other countries, especially Southeast Asia and Australia, as well as the United States and Europe.

Obayashi has 86 subsidiaries and 26 affiliated companies in Japan, Europe, the Middle East, Asia, Australia and North America.

[6] In February 2012, the company announced plans to build a space elevator by 2050.