Dodger – my first query is about the advice being provided by your Strata Manager; where are they in all this?
Their advice should have been that your Owners Corporation (O/C) needs to promptly ensure that the Minutes of the General Meeting accurately and fully reflect the facts that you’ve provided here.
At the same time, your Secretary or Strata Manager needs to advise these potentially offending Owners in writing that unless the O/C receives their written assurance that the louvers will not be installed without its proper consent, then after (say) 7 days it’s applying for Mediation of the matter by the NSW Department of Fair Trading (DFT), and concurrently for Interim Orders in the NSW Civil and Administrative Tribunal (NCAT) so as to immediately put a stop to any works that they’re contemplating.
Note: an Application for Interim Orders will not be considered by the NCAT unless an Application for Mediation of the same matter is at least recorded in the system operated by the DFT, albeit that Mediation session may not yet have been convened.