20.82.040   Permitted additions and expansion.
   A.   Structures which are nonconforming only as to setbacks and/or building height may be expanded subject to present development standards of the zoning ordinance provided that the total floor area of all such expansions permitted subsequent to April 7, 1964, is not greater than fifty percent of the floor area of the original structure.
    B.   Residential structures in districts permitting residential uses and which are nonconforming only as to on-site parking may be expanded provided that, if cumulative expansion from the time the structure became nonconforming exceeds two hundred square feet of habitable area, such structures shall be brought into conformity as to present on-site parking requirements.
    C.   Additions to single-family and duplex structures with nonconforming sideyard setbacks may be constructed so as to extend the building wall(s) adjoining such nonconforming sideyard(s) provided the cumulative habitable area of all such additions does not exceed two hundred square feet.
    D.   Any addition or expansion permitted pursuant to this chapter shall comply with all present development standards contained in the zoning ordinance applicable to the nonconforming structure or use.
(Ord. 88-12-1023 § 1 (part))