The following obstructions, when located in the minimum area required for specified yards, shall be permitted.

1.   In all yards:

   A.   Chimneys projecting 18 inches or less into the yard;

   B.   Flag poles;

   C.   Ordinary projections of sills, belt courses, cornices and ornamental features projecting not more than 18 inches into a yard;

   D.   Ornamental light standards;

   E.   Steps which are necessary for access to permitted buildings or for access to lots from streets and required exterior fire escapes;

   F.   Fences, hedges, and walls (see Section 165.43 for requirements);

   G.   Retaining walls (see Section 165.43 and requirements specific to Retaining Walls in 165.43(7)).

2.   In front yards:

   A.   Fuel pumps and air and water outlets in conjunction with automobile service stations, provided they shall be set back at least 15 feet from the front lot line;

   B.   One-story bay windows projecting three feet or less into the yard;

   C.   Open terraces not over four feet above the average level of the adjoining ground and not projecting over 10 feet into a yard, but not including permanently roofed-over terraces or porches;

   D.   Signs and nameplates, as regulated therein.

   E.   In all residential districts there shall be a minimum front yard required for that particular zoning district in this chapter; provided, however, that where lots compromising 30 percent or more of the frontage within 200 feet of either side lot line are developed with buildings at a greater or lesser setback than stated in said particular zoning district, the front yard requirement for an undeveloped lot shall be the average of these building setbacks. In computing the average setback, buildings located on reverse corner lots or entirely on the rear half of lots shall not be counted However, in no case shall the required front yard setback exceed 50 feet.

3.   In rear yards:

   A.   Air-conditioning condensers for central air conditioning units;

   B.   Arbors and trellises;

   C.   Balconies of not more than five feet into the required yard;

   D.   Breezeways and open porches;

   E.   Private garage;

   F.   One-story bay windows projecting three feet or less into the yard;

   G.   Overhanging roof eaves and gutters, provided eaves and gutters of detached accessory buildings are not less than two feet from a lot line;

   H.   Open terraces not over four feet above the average level of the adjoining ground, but not including permanently roofed-over terraces or porches;

   I.   Open accessory off-street parking spaces;

   J.   Playground and laundry-drying equipment;

   K.   Private swimming pools and tennis courts;

   L.   Sheds, tool rooms or similar buildings customarily accessory to the principal use.

   M.   Satellite dish.

4.   Side yards:

   A.   Open accessory off-street parking spaces;

   B.   Overhanging eaves and gutters projecting 24 inches or less into the yard;

   C.   Air-conditioning condenser for air-conditioner units.