That would complicate the issue in my opinion, but in any event it’s the O/C that has the absolute responsibility to decide if there’s a maintenance problem with its property, and if there is a problem, how to best address it – it shouldn’t abrogate that!
In addition, it’s in fact easier for an O/C to add and collect an additional fee, that’s been agreed to and minuted at an AGM, as a separate line item on an Owner’s Levy Contributions Invoice than it is for that O/C to reimburse an Owner for a cost that they’ve incurred via a third-party.
It really comes back to how certain your O/C is that there’s no structural problem with the balcony – perhaps find out the costs of an opinion as opposed to a full-blown report and go from there; it may be cheaper than you think and at least then your O/C would have some basis for its decision.
Perhaps have a chat with Integrated Building Consultancy – they’re sponsors of FlatChat.