In Victoria, inner suburbs, do I require a planning permit and/or a building permit to convert part of the living room to a 3rd bedroom? A window is already there so natural lighting and ventilation req are ticked. No adverse structural effect if I am only adding two internal walls and a door. Where can I check if the unit forms part of the owner corporation if it is a small subdivided triplex or duplex? In case this will also require owner corporation's approval. I'm assuming planning permit is required after all? If not how can I advertise/register it as 3 bedroom in future when selling?