Parapet walls not exceeding four feet in height, chimneys, ventilators, cooling towers, elevators, bulkheads, tanks, water towers, radio towers, ornamental towers, monuments, cupolas, domes and spires may be erected above the height limits herein established.
Every part of a yard required herein shall be open from the lowest point to the sky unobstructed, except for the ordinary projections of window sills, belt courses and other ornamental features to the extent of not more than four inches.
In any residence district, the rear yard requirements and lot area per family requirements may be reduced ten percent on a corner lot.
Cornices may not extend more than eighteen inches into any yard.
Fireproof outside stairways, open or lattice enclosed, iron fire escapes or solid floored balconies opening upon fire towers, may project into a side yard or a rear yard a distance of not more than four feet.
Accessory buildings in residence districts shall not be nearer than three feet to any property line.
Chimneys or flues may be erected within the limits prescribed for yards, provided they do not exceed five square feet in total horizontal area.
No building in the rear of a principal building on the same lot, shall be used for residence purposes except for domestic employees of the owner or tenants of the principal building, unless such rear building conforms to the open space requirements in this Zoning Ordinance for a principal building and shall have on the same lot an easement of access at least ten feet wide, unoccupied to a street, in addition to any other open space requirements of this Zoning Ordinance. Such building shall not be over two stories high and shall not be within thirty feet of any other building not an accessory building.
(1955 Code. §1153.02)