The building was reopened in 1989, 120 years since it became operational. The building was fully reconstructed while the new annex was built in the direction of the Braće Jugovića Street, doubling the floor venue of the edifice. While the annex was built in the modern, glass style, the old section of the theatre actually regained its 1922 appearance. The annex has 5 floors above and 2 floors below the ground. The total floor area of the building is , of which can be used. The architects projected special places for the future connections between the annex, now called the Working Building, and the possible new Opera and Ballet building on the Square Republic, across the Francuska Street.
