When we moved house our house got moved up a council tax band we challenged it and lost. The house next door which would originally have been identical to ours sold afterwards. Its council tax band has not increased. Prior to it being sold it was extended so it is bigger than ours. It has an extra two rooms downstairs than ours.
These are the only two houses locally that would have been the same. We have done some more digging as this seems really unfair. We now have evidence of what that house sold for 6 months before April 1991 which puts it firmly in the original band.
I have lost the paperwork we had before, but I want to challenge it again. I cannot figure out how to do this. I have been on the gov.uk website and I just go round I circles. I cannot phone during office hours and cannot figure out the postal address.
Can anyone point me in the right direction? Has anyone had success in challenging their council tax band some years after losing a challenge. It just feels blatantly unfair.