Any member of the owners corporation can participate in decisions regarding repairs and other works by attending annual general meetings and offering to serve on the owners corporation committee. Most decisions require a majority of the members to be in favour of proposed works to be undertaken.
Common property exists for the benefit of all members. As such it is integral for your owners corporation to undertake the repair and maintenance of the common property to ensure it is maintained.
Further, your owners corporation is required to comply with any notice served by a statutory authority in regard to common property. For example – an order by the water authority to repair a leaking supply main.