Jimmy,
some of us that think pragmatically about these matters would suggest that there is a real simple answer to this…. a By-law gets passed and registered for the first renovation of this nature, and is simply amended to add the next lot number as and when they wish to renovate in this manner. This is ok as long as the works are the same, no alterations of plans etc
The question is then one of who pays what costs for the drafting and registration of the By-law.
Some would argue those benefiting should pay all costs, while others may consider that the By-law is equally for the protection of the OC, but best for the parties involved to come to some form of agreement on this.