[Amended 10-26-1998 by L.L. No. 1-1998]
A nonconforming structure may not be reconstructed or structurally altered to an extent exceeding, in aggregate, 25% of the gross floor area of said structure, unless the structure shall be changed to a conforming use. A one- or two-family residential structure may be expanded even though the present structure violates current front or rear setback requirements, if the expansion does not result in any portion of the structure being in greater violation of such front or rear setback requirement than the existing structure. For purposes of illustration, if an existing structure is 50 feet from the right-of-way and Code requires a sixty-five-foot setback from the right-of-way, the structure can be expanded sideward so long as it is no closer than the fifty-foot front setback of the existing structure and the sideward expansion does not violate side setback requirements.