Section 58(2) in West Bengal Municipal (Building) Rules, 2007
(2)No habitable room shall have a height of less than 2.75 metres measured from the surface of the floor to the lowest point of the ceiling or the underside of any slab :Provided that in the case of any centrally air-conditioned building, the height of any habitable room shall not be less than 2.4 metres measured from the surface of the floor to the underside of any slab or false ceiling, as the case may be :Provided further that the height from the surface of the floor up to the beam shall not be less than 2.4 metres :Provide also that in the case of any pitched roof, the average height shall not be less than 2.75 metres and the minimum height at eaves level shall be 2.1 metres.
