There is no revaluation taking place. The Valuation Office Agency is only required to review council tax bands when a property sells if it has previously been improved. There were approximately 22.7 million dwellings in England in 2008-09, of which 8,406 (0.04 per cent.) were reviewed and moved into a higher council tax band in that year, and 33,725 (0.15 per cent.) were reviewed but remained in the same band.