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 as otherwise provided in this chapter and that for purposes of swimming pools and accessory buildings the yard upon which the principal building faces shall be considered the front yard and the yard to the rear of the principal building shall be considered a rear yard.

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 24 inches unless otherwise permitted by this chapter. Unroofed entrance porches, terraces, ADA ramps, stairs and landings which do not rise above the height of the floor level of the ground floor may extend up to five feet into the required side yard; up to 10 feet into any required front yard and up to 10 feet into any required rear yard providing the total area of all such porches, terraces, ADA ramps, stairs and landings which extend into such yards, does not exceed 1,000 square feet.

The total lot coverage of the square footage of the ground floors of all buildings located on a lot in any residential zone shall not exceed 25% of the total square footage of the lot as shown by an accurate survey. The total lot coverage of the square footage of the ground level of all buildings and structures combined located on a lot in any residential zone shall not exceed 50% of the total square footage of the lot. The purpose of this limitation is to ensure a water permeable surface within the residential zone sufficient to absorb and diffuse rain and other surface water in order to prevent or alleviate flooding.