23What to be deemed new buildings
For the purposes of this Act and the Public Health Acts, and any byelaws made thereunder, each of the following operations, namely:—
(a)The re-erection, wholly or partially, of any building of which an outer wall is pulled down or burnt down to or within ten feet of the surface of the ground adjoining the lowest storey of the building, and of any frame building so far pulled down or burnt down as to leave only the framework of the lowest storey ;
(b)The conversion into a dwelling-house of any building not originally constructed for human habitation, or the conversion into more than one dwelling-house of a building originally constructed as one dwelling-house only;
(c)The re-conversion into a dwelling-house of any building which has been discontinued as or appropriated for any purpose other than that of a dwelling-house ;
(d)The making of any addition to an existing building by raising any part of the roof, by altering a wall, or making any projection from the building, but so far as regards the addition only ; and
(e)The roofing or covering over of an open space between walls or buildings ;
shall be deemed to be the erection of a new building.