I want to understand the mechanism behind its approval - i.e. which rules allow this, because after careful reading of the DCP I cannot understand how they exist Council in question is Parramatta - but I think it would be the same case across many councils in Sydney The issue is the DCP requires min lot size of 550sqm for torrens subdivision, and min. 600sqm for dual occ. If I have a 600sqm block and 15m frontage, I can build a side by side duplex, allowing for strata subdivision and 300sqm per dwelling - this I understand. Why, then, on realestate.com.au etc I sometimes see for sale "Torrens duplex! 350sqm" etc - how do these exist? Is it some sort of SEPP trick, or some sort of case by case exception to rules granted by the council during DA?