By means of the procedure set forth in 17.175.050, the city planner may authorize up to a ten (10) percent expansion, in any five year period, of an approved conditional use in relation to its gross floor area, height, parking, and occupancy, including number of seats, classrooms, and students; provided, however, that no expansion of a structure by means of this procedure shall exceed 5,000 square feet in gross floor area. All such modifications shall be consistent with the original conditions of approval and applicable regulations. (Ord. 03-33 §70, 2003).