No yard or other open space provided around any building for the purpose of complying with the provisions of this chapter, shall be considered as providing a yard or open space for any other buildings, and no yard or other open space on one lot shall be considered as providing a yard or open space for a building on any other lot.

All yards facing on a public street shall be considered front yards and shall conform to the minimum front yard requirements for the zone in which located except lots with frontage on more than one street, which are not corner lots, may have a front and rear yard designated by the owner subject to:

Every part of a required yard shall be open and unobstructed from its lowest level to the sky, except for the ordinary projections allowed by the State Uniform Construction Code including, but not limited to, sills, belt courses, chimneys, flues, buttresses, ornamental features, and eaves; provided, however, that none of the aforesaid projections shall project into the minimum required yards more than 36 inches, unless otherwise permitted by this chapter.

The requirements for yard areas shall not apply to any retaining wall, steps or any other fence or wall which is less than three feet high.