Hi, Last year, I talked to a builder who advised that I cannot build a duplex on my 714sq m land in Hornsby Council because the land is too small for subdivision. I was told that Hornsby Council has recently changed the floor space ratio from 40% to 55%. Because of this change, I am now re-considering seriously if I can still build a pair of duplex (i.e. dual occupancy) without subdivision, i.e. on one title. Any advice on this would be highly appreciated.