23.86.032

A. When a requirement is based on the percentage of a structure's gross floor area which is in residential use, residential area shall include the following: 1. The gross floor area of all floors or portions of floors of a structure that are devoted entirely to residential use, except as otherwise provided in this Section 23.86.032 ; 2. For required amenity area and open space, accessory parking areas, storage areas, and mechanical rooms are excluded from the calculation of gross floor area in residential use; 3. The prorated portion share of a structure's common areas in the same proportion as the residential use to commercial or other non-residential uses occupying the structure. B. When a requirement is based on the percentage of a structure's gross floor area which is in commercial or other non-residential use, commercial or other non-residential use area shall include the prorated portion share of a structure's common areas in the same proportion as the non-residential or commercial use to residential uses occupying the structure. (Ord. 125603 , § 82, 2018; Ord. 112303, § 27, 1985)