1. The sum of the horizontal area of the floor(s) of a building or buildings measured from the exterior faces of exterior walls and from centerlines of division walls. The gross floor area includes basement space, garage space, the elevator shafts and stairwells at each floor, mechanical equipment rooms, finished attics with a headroom of seven and one-half feet or more, penthouse floors, interior balconies and mezzanines, and enclosed porches. The gross floor area shall not include accessory water tanks and cooling towers, mechanical equipment, and unfinished attics regardless of headroom.

2. For purposes of determining off-street parking requirements, gross floor area shall mean the sum of the horizontal area of the floor(s) of a building or buildings measured from the exterior faces of exterior walls and from centerlines of division walls including basement space, the elevator shafts and stairwells at each floor, mechanical equipment rooms, finished attics with a headroom of seven and one-half feet or more, penthouse floors, interior balconies and mezzanines and enclosed porches; but shall not include garage space, accessory water tanks and cooling towers, mechanical equipment and unfinished attics regardless of headroom.

1. The sum of the horizontal area of the floor(s) of a building or buildings measured from the exterior faces of exterior walls and from centerlines of division walls. The gross floor area includes garage space, the elevator shafts and stairwells at each floor, mechanical equipment rooms, penthouse floors, interior balconies and mezzanines, and enclosed porches. The gross floor area shall not include accessory water tanks and cooling towers, mechanical equipment, attics as defined by GHMC 17.04.086, and underground floor area as defined by GHMC 17.04.362.

2. For purposes of determining off-street parking requirements, gross floor area shall mean the sum of the horizontal area of the floor(s) of a building or buildings measured from the exterior faces of exterior walls and from centerlines of division walls including the elevator shafts and stairwells at each floor, mechanical equipment rooms, penthouse floors, interior balconies and mezzanines, enclosed porches and underground floor area; but shall not include garage space, accessory water tanks and cooling towers, mechanical equipment and attics. (Ord. 1278 § 4, 2013; Ord. 1152 § 2, 2009; Ord. 1008 § 2, 2005; Ord. 573 § 2, 1990).