“7.2 Statements about the degree of non-domestic use that might be permissible before rateability is triggered were made during the Parliamentary and consultative processes and these guidelines are to be used. During the House of Lords Report Stage of the Local Government Finance Bill, on4 July 1988 , Lord Caithness said:- “Where the use of domestic property for a non-domestic purpose does not materially detract from the domestic use, that should not result in that property being rated”