The challenge in the writ petition is against Ext.P3 assessment order passed in relation to the petitioner under the Kerala Building Tax Act. It is the case of the petitioner that, while there was a building that was earlier subjected to assessment under the Building Tax Act, the petitioner had made some improvements to the building and also covered a substantial portion of the building using truss work. It is stated that in Ext.P3 assessment order, the entire area including the area covered by truss work has been assessed to building tax, after giving deduction to the tax amounts already paid pursuant to the earlier assessment. The learned counsel for the petitioner would submit that the area covered by the truss work cannot be taken into reckoning for the purposes of determining the plinth area for the purposes of assessment under the Building Tax Act, as laid down by a number of decisions by this Court and hence, Ext.P3 is vitiated by a patent non application of mind by the respondent assessing authority.