Section 255(2) in Chennai City Municipal Corporation Act, 1919
(2)If any question arises as to whether any addition or alteration is a necessary repair not affecting the position or dimensions of a building or room such question shall be referred to the [standing committee] [Substituted for 'licence appeals committee' by the Madras City Municipal Corporation and Tamil Nadu District Municipalities (Amendment and Extension of Terms of Office) Act, 1971 (Tamil Nadu Act 22 of 1971).], whose decision shall be final.