Section 2(1)(c) in Punjab Urban Planning and Development Authority Building Rules, 2013
(c)"alteration" means a change to the structure of building, such as an addition to the area or height, or removal of part of a building or any change to the structure such as construction of cutting into or removal of any wall, partition, column, beam, joist, floor or other support, or a change to or closing of any required means of ingress or egress or a change to the fixtures or equipments;