Section 97A(10) in The Kerala Panchayat Buildings Rules, 2011
(10)In the proposed alteration or addition (extension) of first and second floor(s), door shall be permitted only on the side or portion having 1.00 metre open space, window shall be permitted only on the side or portion having 60 centimetres open space and no opening shall be permitted on the side or portion having less than 60 centimetres open space.