Section 113(2) in West Bengal Municipal (Building) Rules, 2007
(2)A certificate shall be furnished by the owner of the plot measuring 2 cottahs to 5 cottahs on the body of each plan of building furnished for sanction in the following form :"Certified that I shall not on later date make any addition or alteration to this plan so as to convert it for use or allow it to be used for two separate flats per floor/per storey."
