Section 186(1) in The Howrah Municipal Corporation Act, 1980
(1)If, at any time, it becomes necessary to acquire the right of user in any land in or around any bustee for the purpose of effecting improvement, the Corporation shall follow such procedure as may be prescribed:Provided that the compensation payable to any person whose right of enjoyment in such land has been prejudicially effected by such acquisition shall be calculated at ten per cent, of the market value of such land on the date the Corporation declares its intention to acquire such right.