19.22.170 Building additions and remodeling.
A. Additions, Greater Than 50 Percent. If an addition to a legal existing dwelling unit constitutes an increase of 50 percent or more of the floor area of the original building’s square footage, the existing building, including the addition, shall comply with current zoning code standards, except for the current building setback standards which would only apply to the addition.
B. Additions, Less Than 50 Percent. If an addition to a legal existing dwelling unit constitutes less than 50 percent of the floor area of the original building’s square footage, the existing building may be expanded or altered along the existing horizontal side yard building plane; provided, all of the following criteria are met:
1. The proposed addition is located on a lot that is 60 feet wide or greater at the front setback line; and
2. The proposed addition maintains a minimum five-foot setback from the side property line; and
3. There is a minimum 10-foot separation between the horizontal building plane of the existing dwelling unit and the addition and the horizontal building plane of an existing residence on an adjacent lot; and
4. There is a minimum six-foot separation between the edge of the proposed addition and any accessory building on-site or on an adjacent property.
C. Verification of Square Footage. For purposes of this section, the original dwelling unit’s square footage shall be determined by a dimensioned floor and site plan submitted by the applicant to the Director of Planning for review and verification. (Ord. 3153 § 2 (Exh. A), 2010; Ord. 2711 § 1, 1997; Ord. 2144 § 2, 1986).