(A) No non-conforming structure shall be moved, altered, enlarged or reconstructed so as to increase the discrepancy between existing conditions and the standards of coverage, floor area, front yard, side yards, rear yard or height of structures prescribed in the regulations for the district in which the structure is located without a variance issued under Chapter 17.028.
(B) The aggregate amount of construction, alteration, enlargement or reconstruction on any nonconforming building or structure, or on any building or structure located on a nonconforming property during the life of the building or structure subsequent to October 2, 2009 shall not:
(1) Affect more than 50% of the floor area of the building or structure or expand that floor area by more than 50%; or
(2) Result in the addition of a bedroom to such residential building or structure. For the purposes of this paragraph, when any changes are made in the building, such as walls, columns, beams or girders, floor or ceiling joists, roof rafters, roof diaphragms, foundations, piles or retaining walls or similar components, the floor area of all rooms affected by such changes shall be included in determining affected floor area.
(C) The restriction in this division shall not apply:
(1) To projects that are limited to replacing windows and/or doors, installation of insulation to achieve greater energy efficiency, cosmetic floor or wall coverings, roof repairs that do not change the configuration of the existing roof, earthquake preparedness improvements or projects to generate alternative energy; or
(2) When all of the following conditions exist:
(a) The off-street parking requirements of Title 17 are met or a variance for an exception has been granted;
(b) The work does not increase an existing or create any new nonconformity; and
(c) The structure or building is not located in an area that is subject to the provisions of either Chapter 17.060 (Ridgeline Development) or Chapter 17.068 (Flood Zones).
(Prior Code, § 17.10.040) (Ord. 352, passed --1973; Am. Ord. 486, passed --1981; Am. Ord. 605, passed --1991; Am. Ord. 696, passed 9-3-2002; Am. Ord. 742, passed 9-2-2009)