Sorry for the long topic. I have an approved planning permit which was based upon plans my original draftsmen did by hand. I have since engaged a builder and had proper working drawings done which includes amendments I have had to take back through council. However my new plans have shown that the dwelling is not within building regs, slightly over the allowed height setback on one side (marginal but there). My draftsmen said they are unsure how council will see this but said you could argue they approved previously and someone obviously didn't review it properly initially. The changes I have submitted are minor and all within regulations but I'm now concerned how they will view this. Is it in there power to reverse something they initially approved. They may argue it was not properly indicated in the original drawings? To fix it would require a fairly annoying adjustment of my home.