Further amendment of regulation 6A.3.1 says, “The retiring room/rest room/changing room for staff, administrative office, canteen, medical centers, only as auxiliary to the main use up to the extent of 15% of the built up area in case of industrial estates/industrial areas. Provided that no permission shall be given for housing, unless the area of the plot exceeds 10,000 sq mts and where maximum 2.50% of built up area is permissible.”