Trust me you are already a guru for someone as green as me. ;) Sorry my knowledge about development is very limited so I can't provide you proper advise about the study and carport. But will wait for other peoples opinion as they are always helpful
Hi long haul,
Wow you really know your numbers! :)
Just one question, when you say 3bdr new dwelling, do you mean 2bdr+1 study? My understanding is that for Auxiliary unit there are a maximum of two bedrooms.