In this Chapter, unless the context otherwise requires, the expression “to erect building” means:—
(a) to erect a new building on any site whether previously built upon or not ;
(b) to re-erect :—
(i) any building of which more than one-half of the cubical contents above the level of the plinth have been pulled down, burnt or destroyed ; or
(ii) any building of which more than one-half of the superficial area of the external walls above the level of the plinth has been pulled down ; or
(iii) any frame building of which more than a half of the number of the posts of beams in the external walls have been pulled down ;
(c) to convert into a dwelling house any building or any part of a building not originally constructed for human habitation or, if originally so constructed, subsequently appropriated for any other purpose ;
(d) to convert into more than one dwelling houses a building originally constructed as one dwelling house only ;
(e) to convert into place of religious worship or into sacred building any place or building not originally constructed for such purpose ;
(f) to roof or cover an open space between walls or buildings to the extent of the structure which formed by the roofing or covering of such space ;
(g) to convert two or more tenements in a building into greater or lesser number ;
(h) to convert into a stall, shop, warehouse or godown, stable, factory or a garage any building not originally constructed for use as such or which was not so used before the change ;
(i) to convert a building which when originally constructed was legally exempted from the operations of any building regulations contained in this Act or in any bye-laws made thereunder or in any other law, into a building which had it been originally erected in its converted form, would have been subject to such building regulations ; and
(j) to convert into or use as a dwelling house any building which has been discontinued as or appropriated for any purpose other than a dwelling house.