Came across something recently about being able to apply to LA for reduced council tax bill if have room used solely by a disabled person. If successful, pay tax one band lower than normal. My mother lives with us and since she hasn't been able to go upstairs we have had to build a downstairs bathroom for her and she lives in another downstairs room (our living room). I filled in the very simple form (1 side of A4) 2 weeks ago, had one phone call to check something, and today heard that we qualify for the reduction backdated to the start of this tax year. A useful saving as I had to give up work when my mother moved in. So if you're in this position - and I know many are - do check with your council. 
