This is not as specific as the ACT regs but I think it may be effective. Add the extra cost to the owner’s levies notice and let them take you to NCAT to have it overturned.
Here is what I think may be relevant …
63 (4) Work that is duty of owner or occupier to carry out
An owners corporation may carry out work that is required to be carried out by a person who is the owner, mortgagee or covenant chargee in possession, lessee (or, in the case of a leasehold strata scheme, sublessee) or occupier of a lot in order to remedy a breach of a duty imposed by Chapter 4 and may recover the cost of the work from that person.
It’s not exactly the same, obviously, but it does establish the principle that the OC can charge the owners for work that they should have done.
As I said, let them chase you to NCAT if they don’t like it.