Section 117(3) in West Bengal Municipal (Building) Rules, 2007
(3)Every bathroom shall have a floor area of not less than 1.80 sq m for which the smallest side shall not be less than 1.22 m and if a water closet room is combined with the bathroom, the floor area shall not be less than 2.80 sq.m and the smallest side shall not be less than 1.22 m. Every water closet shall have a floor area of not less than 1.10 sq.m. for which the smallest side shall not be less than 0.9 m. The minimum floor area of bathroom and water closet in the case of Industrial or Low Income Group Housing Scheme shall be 1.53 sq.m and 1.10 sq.m respectively.
