It shall be unlawful to alter, or in any way modify plans which have been approved by the Building Commissioner, as hereinbefore provided. If, during the progress of such work, it is desired to deviate, in any manner affecting the construction or other essentials of the building, from the terms of the application or drawing, notice of such intention to alter or deviate, shall be given to the Building Commissioner, and his written assent shall first be obtained before the alteration or deviation may be made; but alterations in buildings which do not involve any change in their structural parts, or of their stairways, elevators, fire escapes or other communications or ingress or egress, or in lighting or ventilation or in plumbing or electric wiring, and that are not in violation of any of the provisions of this chapter, or the provisions of the zoning regulations of the Village, may be made without the permission of the Building Commissioner. (Ord. 96-37, 11-12-1996)