[2] It was designed by CPV Group Architects and Engineers Ltd and built by CANA Construction Company Limited.

The Nexen Building employs a composite stub-girder steel-frame floor system,[5] originally developed in part by Joseph Colaco.

[6] It is unique in that it is one of the few buildings in Calgary that do not follow the traditional grid pattern of the downtown core.

The original tenant of the Nexen Building was the NOVA Corporation.

[7] Nexen was purchased by Chinese state-owned CNOOC in 2013 and reduced its workforce over time.