db – on the basis that the information you provided in your other post on this subject is correct, although I don’t recall you advising (as you have here) that you’ve already completed the works, if those works have been undertaken by a properly licensed tradesperson who’s provided you with a Certificate of Compliance (CoC), then you need do nothing at the time of a sale other than to, at your discretion, include a copy of that CoC with Contract of Sale.
On the basis of my very recent experiences with sales of Lots (3) in our Plan, where matters of greater significance than yours have been disclosed by the Owners Corporation to the Solicitors/Conveyancers acting for the parties, have been brought to the attention of people conducting Strata Reports, and yet still the sales have been concluded without the slightest hiccup, and in one case with a new Owner claiming no knowledge of disclosed matters (?).
As I concluded elsewhere, either purchasers are in these time prepared to overlook potential impediments to their transaction, or aspects of the sale-of-land system are broken!