I think you need to look at the new laws on renovations which apply to all buildings regardless of age.
If you look at page 37 of the new Strata Living handbook it says you need approval by a simple majority (rather than a special resolution) at a general meeting:
Minor renovations – Includes renovating a kitchen; changing recessed light fittings; installing or replacing wood or other hard floors; and reconfiguring internal walls.
Other items usually considered to be minor renovations are sustainability measures, such as clothes lines and air conditioners.
Lot owners must get the approval of the owners corporation by general resolution (50% of those entitled to vote at a meeting) before any work can commence.
Lot owners may need to provide details of the work including:
the work, such as any plans
the duration and times of the work
the people who will carry out the work, including their qualifications.