Ray,
I am in the ACT but one of the questions I had for the electricity network operator here was about how to cater for the small set of units that could not be accommodated for EV charging in the manner proposed for 95% of our owners. We would need a new connection to the mains in a location away from all the others. It would require trenches, heavy duty cables and so on.
The response was that the network operator has a service obligation to supply whatever we felt we needed. That could get expensive and they are also entitled to recoup their costs. However, if a case can be made that they can reasonably anticipate that their costs will be eventually recouped through the network component of the additional retail electricity sales, then the up-front cost to us could be low or nil.
So, if your units are chronically undersupplied, even before considering EVs, then you might not necessarily be up for a large expense to get it fixed. It might take some ringing around, effort, writing and co-ordinating, but perhaps not impossible.