If the original 4 metre deep 2 storey extension was rejected because it protruded 1 metre beyond rear wall of set back neighbour that seems rather harsh. I would have thought your designer could have put up an argument to overcome that objection, even if it was something like lowering the eaves height etc. Have you used your re-submission on this 3 metre extension?
It was considered to have too much of an impact in the public realm. But I imagine that the neighbour's complaint may have had some sway, but the council couldn't elaborate on whether it did or not, just that it was deemed too much. Considering you can barely see the back of my house from public realm, I felt the argument fell on its face a bit.
The resubmission has been used so we go out 5m downstairs and 3m upstairs. I only originally went for 4m to be cheeky if I'm honest and see what we could get away with. If it had been approved I'd have been surprised, but at the same time laughing.