Examining the process in Wales, the RICS work shows how re-banding was not carried out in line with Welsh house price inflation - house prices have risen an average 129% in Wales since 1991. This has resulted in more homes automatically entering higher bands.
Welsh council tax revenues are set to rise by around 10% in 2005/6. Of this increase, 4% is accounted for by bill increases in each band to fund local services (the lowest increase in council tax since its introduction) but 6% is due to the impact of more houses moving into higher bands.
RICS economist David Stubbs said:
'It has been publicly stated that council tax revaluation is a revenue neutral exercise. Its not about increasing the overall tax take. If the Welsh model is adopted in England we will see a disproportionate number of houses moving up into higher bands in southern regions where house prices have risen above the national average since 1991.'
'Since the last revaluation in 1991 house prices in England have risen by an average 162%. To remain tax neutral any re-banding exercise must take account of this.'
The value of houses in England on 1 April this year will affect how much council tax people pay. The first revaluation of English homes since 1991 is being carried out by the Valuation Office Agency under the 2003 Local Government Act.
The Lyons independent inquiry into local government, which is considering council tax reform, will report by the end of this year.