I suppose these 400m blocks would've been more functional to build on if they had a wider frontage, but I suppose there were reasons why they are like that. So, my question here relates to what can be built on one of these typical blocks. What I'm looking at is pushing the limits - what have people done/built to maximise their yield/profit/cashflow? These blocks are typically low density, but is there any way possible to get atleast to rentals/properties on one of these blocks. I know people will say you can't because of the city plan etc, but is there any way. The thing that got me thinking, is that I have a friend who had a 200sqm block in Melb (ie 10 x 20m) and via careful design he has managed to squeeze 2 x 2br townhouses with single car carpots on the land and rents them both out for $620 total per week!