Section 164(5) in West Bengal Municipal (Building) Rules, 2007
(5)For plots of size not more than 65 (sixty-five) sq. metres, minimum side space of 0.90 metre may be allowed on each side provided the building height does not exceed 6.5 metres.Explanation :(i)Notwithstanding anything contained in this rule, the minimum distance across the side open space from every new building to an existing building with a door opening or window opening shall be 1.80 metres;(ii)Notwithstanding anything contained in this rule, the minimum width of side open space for an industrial or storage or mercantile (wholesale) building shall be 3.50 metres;(iii)In the case of a building more than 24.00 metres in depth on a plot abutting any street, a passage along the entire depth of the building shall be provided and the minimum width of such passage shall be 4.0 metres.
