▁remain ▁un changed ▁at ▁£ 1 2 , 0 0 0 . ▁ ▁The ▁Local ▁Government ▁Fin ance ▁Act ▁ 1 9 8 8 ▁gives ▁broad ▁author isation ▁for ▁reg ulations ▁to ▁be ▁made ▁about ▁alter ations , ▁which ▁can ▁include ▁alter ations ▁by ▁the ▁Val u ation ▁Office ▁Agency ▁to ▁maintain ▁the ▁list ▁accur ately , ▁or ▁propos als ▁by ▁interested ▁parties ▁to ▁change ▁the ▁list . ▁The ▁reg ulations ▁have ▁differ ed ▁widely , ▁changing ▁the ▁time - frame ▁of ▁when ▁alter ations ▁are ▁effective . ▁For ▁example , ▁propos als ▁to ▁alter ▁the ▁ 2 0 0 0 ▁rating ▁list ▁by ▁an ▁occup ier ▁were ▁restricted ▁to ▁take ▁effect ▁in ▁the ▁financial ▁year ▁in ▁which ▁they ▁were ▁made , ▁but ▁the ▁ 2 0 0 5 ▁rating ▁list ▁removed ▁this ▁restriction , ▁so ▁that ▁a ▁successful ▁proposal ▁can ▁have ▁effect ▁as ▁far ▁back ▁as ▁ 1 ▁April ▁ 2 0 0 5 . ▁ ▁What ▁is ▁commonly ▁known ▁as ▁an ▁appeal ▁is ▁more ▁correctly ▁known ▁as ▁a ▁proposal ▁to ▁alter ▁the ▁rating ▁list . ▁Pro pos als ▁can ▁be ▁made ▁on ▁a ▁number ▁of ▁grounds , ▁including ▁challeng ing ▁the ▁basic ▁rate able ▁value , ▁an ▁alter ation ▁to ▁the ▁property , ▁or ▁propos ing ▁a ▁reduction ▁from ▁a ▁specific ▁date ▁due ▁to ▁a ▁particular ▁event ▁( such ▁as ▁changes ▁to ▁a ▁street ▁affect ing ▁traffic ). ▁When ▁an ▁appeal ▁is ▁made , ▁it ▁will ▁first ▁be ▁discussed ▁with ▁the ▁Val u ation ▁Office ▁Agency , ▁who ▁will ▁attempt ▁to