Section 46(3) in West Bengal Municipal (Building) Rules, 2007
(3)For mercantile buildings (retail) and assembly buildings on plots measuring 5000 sq.m. or more, the additional ground coverage to the extent of 15% may be allowed for car parking and building services. The additional ground coverage of 15% will be exclusively utilized for car parking, ramps, staircase, lift for upper level car parking and for building services such as Air Conditioned plant room, generator room, fire fighting equipments, electrical equipments not exceeding 5% out of such 15% shall be used subject to compliance of other relevant building rules.
