Jimmy thanks for the tip on the website pages to look at. I will be speaking to neighbours on this issue in the next few days and am of the opinion, and I may be wrong as I am not legally trained, but think that if the OC has to pay to rectify the problem, that is install insulation, then those who did not know all the facts about the renovation eg me as the buyer and others who I am informed were not given particulars about the renovation should not have to pay for the rectification. Do you think this is a strong argument?
I’d suggest asking the neighbours if they had ever formally complained before about noise transmission, if they have and its not part of the strata records then you may have recourse against the company that did a strata search for you.