The Guild is one of the five Guilds of Riven established by Gehn in his attempt to revive the D'ni Guild system on Riven. It is not known if such a Guild existed in D'ni, but if it existed it must had been one of the Minor Guilds that perhaps was undocumented. Apparently they carried the duties of some of the earlier Guilds of D'ni, such as the Guild of Architects or the Stone Masons, and were responsible for building several of the mechanical structures and D'ni-like buildings on Riven. Gehn considered questioning closely the Guild Master of the Builders concerning security issues.