Whoopi,  I doubt it. You do need permission to work on common property as a general rule. However you can do minor works without approval such as painting or installing a wardrobe, hanging a mirror. On the other hand, maintenance of your property such as work to repair your fixtures and fittings is none of their concern. I think your SC is being difficult due to the circumstances.  

Yes, it is over the top Whoopi. “In house” rules such as that one are not valid. 

Go ahead and employ your own tradespeople to do work within your Lot. There is nothing in the Act that prevents you from doing so.

Let the SC seek permission from the OC to take you to NCAT if they believe that you are in the wrong! 

It is unlikely that they would do so, and very unlikely that they would succeed in any action against an owner, such as yourself, who employed their own tradies to do maintenance and repairs of their own fixtures and fittings within their own Lot. 

Another SC gone ‘rogue’. Sigh. 

@Whoopi said:
Haha do ya think dingo? Yep but it is also for all owners and I think it is over the top. Thanks for your input  Dingo. Much appreciated.   

Whoopi, on paper it might appear to apply to all owners but it may be more a case that the intention is that it only applies to you. Agree lady P they have gone rogue if they where not already that is!