Gross Floor Area. The following shall not be included in gross floor area, used to calculate floor area ratio:

Lot Coverage. Where green roofs or solar panels are installed, lot coverage may be increased at a 1:1 ratio, up to 10% of the lot area. Green roofs shall be comprised of an engineered roofing system that enables the growth of vegetation. The engineered rooftop is typically comprised of the following components: an insulation layer, a waterproof membrane, a root barrier, a drainage layer, a geotextile or filter mat, and a growing medium. Green roofs should only be irrigated (if necessary) with water obtained from a rainwater collection system integrated into the building and/or block.

Stairs in Connection with House Raising. If the steps or stairs are to be constructed in connection with a house raising, steps or stairs from first floor of the principal structure shall be permitted to extend from the deck or principal structure no closer than 5 ft from the front property line. The exception under Subsection (c) does not extend to adjoining decks or porches.