If your property is derelict and unfit for occupation, or it is being reconstructed into a different type of property, then the VOA (Valuation Office Agency) could remove the council tax band altogether. This means that no council tax would be paid until your property is made habitable.
http://www.voa.gov.uk/corporate/CouncilTax/DomesticPropertiesWhichAreInDisrepairOrAreDerelict.html
thank you
that's interesting - i will look into this