VIC Property Law on 99-year Lease - New Certificate of Title Required?

Hi

We are inner city Melbourne dwellers. Our current floor-space is under Certificate of Title. We have approval from OC to take over unused stair space which has been approved about 8 years ago providing a 99-year lease to each floor owner.

I have confirmed I don't need planning permit and I've applied for a building permit to do the works and been advised that I must bring the lease area on to title before I can do any works? Other owners have already made use of common property space at their floor level, and it is not yet on title.

It is the OC intent to do all floors once the works are all complete.

Do I need a new Certificate of Title before I can get a permit and start work under Property Law?