(1)Every applications for permission to erect or re-erect any projection from an upper storey over a street or drain shall be accompanied by the following plan in duplicate, prepared in the manner prescribed:(a)A key plan of the locality showing the precise situation of the building; and(b)A plan indicating the situation of the building concerned in relation to the roads adjoining the building and to the adjoining building or lands and indicating the width of the adjoining roads, and in the case of a road of which the width is not uniform, the width at the nearest point in front of the building.