The Serie A club have now been permitted to open the 'Distinti' section of the new build for Sunday's visit of Pescara, although only 5,000 season-ticket holders will be allowed to enter.
In conjunction with local police, the National Observatory on Sporting Events approved structural work at the new Quartu Sant'Elena base, as well as checking the required upgrades had been made to emergency exits and fire extinguishing equipment.
The Sardinian outfit invoked a hefty punishment from the Italian Football Federation's disciplinary commission when club president Massimo Cellino defied local authority orders by instructing fans to attend Sunday's behind-closed-doors match against Roma.
As a result of Cellino's announcement, the game was promptly cancelled and a 3-0 walkover victory was awarded to Roma, leaving Cagliari to consider entering an appeal against the sanction.
Cagliari left their former Sant'Elia stadium in March and played the remainder of last season's home games at Stadio Nereo Rocco in Trieste, almost 600 miles from Sardinia.