Great attempt FMT, nearly. The block is recessed for the width of the balcony so that the front face of the balcony is flush with the block and the only bit proud of the block is the pitched polycarbonate sheeted roof (which you have shown) of the ground floor extension. That is on one side of the block and on the other side is just the balcony with a recess/patio area below as the other side does not have an extension on the ground floor. Your pictures are right in that the balconies runs about a third of the way along the side of the building going out from the centre line of the building just that you have only shown one side of the block (two maisonettes). That's just a fact, not a criticismI better hope I'm right!
View attachment 94251
Before Extension
View attachment 94252
After Extension
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