This section shall not apply to buildings constructed of wood frame or any building less than twenty five feet (25') high, as long as none of the aforementioned buildings makes use of any metal or masonry constructed walls or any underground storage or parking areas. For purposes of this section, parking structures and stairwells are included in the definition of "building" and stair shafts are included in the definition of "all parts of a building", but elevators may be excluded. (Ord. 607 §2, 2006)