Operes is licenced to work in:
OG 1 – Civil and industrial buildings;
OG 2 – Restoration and maintenance of buildings in the care of the ministry of Beni Culturali ed Ambienti;
OG 11 – Technological systems;
OS 2 – Decorated surfaces and listed buildings of historial and artistic interest;
OS 25 – Archeological sites;
Restoration and conservation projects.