Structures and site improvements lawfully established prior to the effective date hereof which do not conform to the development standards prescribed by this title for the zone district in which they are situated may be continued. Such structures or site improvements may be enlarged only in accordance with the following limitations.
(A) Lot and structure requirements. Structures or site improvements which do not conform to requirements for setbacks, distances between buildings, height, building bulk control or site coverage, may be enlarged; provided, that the enlargement does not further increase the discrepancy between the total structure and applicable building bulk control or site coverage standards; and provided that the addition fully conforms with setbacks, distances between buildings and height standards applicable to the addition.
(B) Density control. Structures which do not conform to density controls (includes GRFA and dwelling units/acre) may be modified, only if the total gross residential floor area of the enlarged structure does not exceed the total gross residential floor area of the preexisting nonconforming structure.
(C) Open space and landscaping. Structures or site improvements which do not conform to requirements for usable open space or landscaping and site development may be enlarged; provided, that the usable open space requirements applicable to such addition shall be fully satisfied, and provided that the percentage of the total site which is landscaped shall not be reduced below the minimum requirement.
(D) Off-street parking and loading. Structures or site improvements which do not conform to the off- street parking and loading requirements of this title may be enlarged; provided, that the parking and loading requirements for such addition shall be fully satisfied and that the discrepancy between the existing off-street parking and loading facilities and the standards prescribed by this title shall not be increased.
(Ord. 8(1973) § 20.500; Ord. 29(2005) § 40; Ord. 14(2006) § 4)