Aaaah, Queensland body corporate regs, confusing one day, bewildering the next.
Have a look at this fact sheet:
Basically the committee can agree to common property improvements costing up to $200 per lot, unless that limit has been raised by the body corporate at a general meeting, to a cap of $300 per lot.
Above those figures, anything up to $2000 per lot can be approved by a simple majority at a general meeting and anything above $2000 per lot requires a special resolution at a general meeting.
An owner who disagrees can apply for dispute resolution.
The opinions offered in these Forum posts and replies are not intended to be taken as legal advice. Readers with serious issues should consult experienced strata lawyers.