It looks like SSR used roof top AC/heating units. a quick count give 324 banks of units. that would mean at least 648 shaft ways (supplies and returns.
While we do not have enough info to be sure of the repair methodology, from my experience even in bulk, each would be between 5 and 20K, so 3.24 to 13 million.
So between .25 and $1 per point special assessment. There are circumstances where it could be significatly worse, though I would view $5 as the likely upper limit.
This will likely require tasking building out of service for significant length of time.