Where abouts are you located, Louie?
If the metal railings & ‘other sections’ are common property then the Owner’s Corporation is responsible for their maintenance. The strata committee is opening themselves up to all sorts of hassles if uninsured, unlicensed people perform work on behalf of the Owner’s Corporation. The “let’s make our own rules” folk might also like to take a google cruise re: liability of strata committee members.
& if you are in NSW assuming the cost of the work is >$5K:
“Only a builder or trader who is properly trained and has the relevant experience to do the work may be licensed with NSW Fair Trading. Any person who carries out residential building work over $5,000 in labour and materials without an appropriate licence is breaking the law and could be prosecuted.”