This is one of those areas where you can see somone is operating well outside their rights or responsibilities but you have to wonder if there’s any harm being done. If the self-appointed strata cop is issuing notices to comply off his own bat, they have no vlidity – but that doesn’t mean they won’t get the appropriate reaction and nip a problem in the bud.
If he (or she) is getting tradespeople to fix up Common Property and it goes wrong, then they could be liable for damaging common property because it is unauthorised work.
I would try to legitimise some of their activity by allowing them to go ahead and do what they are doing regards work, but only up to a certain value and to issue warning notices (not NTCs) for a limited number of infractions with a copy to the EC whenever they do so.
In both cases, there actions are not ‘permitted’ but – provided they aren’t victimising people or wasting money – you really don’t want to rein in someone who’s doing work that others shirk. Just read all the postings on this website about strata schemes where nothing gets done and you’ll see what I mean.