I am looking at a dual occupancy property at the moment. The council allows dual occupancy however the owner didn't seek approval to turn the garage into a flat. I have looked at the council rules around secondary dwellings and this is on an area where they are 'self assessible'. The only thing close to a definition of self assessible I could find related to driveways which only required a form be submitted to council notifying them of the work. Firstly, does anyone have a clear definition of what self assessment entails? Second, I am concerned that if inspections are required I can't prove waterproofing was completed, fyrchek gyprock used where required (not sure if this will even apply) etc etc. Third, has anyone obtained approval for a secondary dwelling after the fact for a property in any of the Brisbane metro councils that allow dual occ?