@alex20 said:
Thank you for your replies and advice. I was not quite clear in that the rails are on a walkway in front of everyones front door and are applicable to everyone so many floors with rails are involved not just one person per rail. Thanks again.Alex20
In that case, I think it is clear that the OC should decide to upgrade them all on the grounds that it would be a responsible thing to do to exercise its duty of care to residents and visitors. Alternatively, it might reasonably decide to upgrade none of them because they are in good condition and, while not quite complying with the current building standard, are only a small risk being not that far behind the current standard.