@Boronia said:.
I would image that removing the storage lockers (steel framework with chain wire “walls”) to provide parking would also require a Council DA?
I doubt it, this could be within the power of the OC to remove. The thing about Visitor parking is that it is a statutory requirement for the development and I very much doubt that applies to storage lockers.
Most items of common property can be changed providing the required vote is passed and as this owner holds 70% of the entitlements he is in a domineering position.
Agree with what Jimmy says and if you did get a managing agent in it would cost a lot more than a normal manager and your friend would be up for 70% of these costs.