Agree with all the above points. Just present a motion to your committee (or request to your strata manager) that they issue a Notice To Comply with the appropriate by-law.
If there is no by-law (unlikely) than they should warn the residents that they will be taking action under sections 106 (1) and (3) and 108 (5) regarding changes to common property without the appropriate approvals.
If the committee or SM refuse to act, you can initiate action yourself, through Fair Trading.
After which your next project might be to change the committee and sack the strata manager.