General By laws versus registered By laws against a lot

Dear Flat Chatters

 NSW. The OC have to replace our membrane on our lot. Previous  renos were done under a ‘general’ By law (not against our lot) which indeminfies the OC against the owner at the time of  of the works being done.  It is not a specific by-law against our lot. It does not mention future owners being responsible. The renos were approved by the OC.  These works need to be removed. The OC wants to charge us for the removal of the renos (and not replace them). Who is responsible for the costs.

 Thank you to any one who responds Merry Christmas to all the Flat chatters