Accessibility and fire safety measures in the building will also be improved.
Economic Development Minister Deputy Kirsten Morel said the submission of the application was “an important milestone”.
“The plans demonstrate that once the refurbishment is complete we will have a fit for purpose state-of-the-art facility long into the future,” he said.
“While the renovations are carried out, we will be working closely with the Opera House Board to ensure the Island’s arts community are kept informed of progress and that alternative venues are secured for artistic events and performances while work is completed.”

Pictured: Deputy Kirsten Morel and Pierre Horsfall, current Chair of the Opera House Board.
Chair of Jersey Opera House Board Limited, Pierre Horsfall CBE, added: “The Opera House is a much-loved venue not only in the performing arts community but for all islanders. A great deal of work has been happening behind the scenes to reach this point and I am delighted to see the plans are on track to reopen this much loved venue for islanders once again.”