I refer the hon. Member to the answer given to him on 24 January 2005, Official Report, column 136W.
There was no expenditure on routine maintenance works for the flat above 10 Downing street in the financial year 2005-06.
The Cabinet Office is responsible for payment of council tax on the official residence in Admiralty house which is currently unoccupied. The residence which is in Westminster city council is in council tax band D.