“Demolition,” for the purposes of this Title and Title 20, means the razing of a building, removal of a dwelling unit, or the removal of more than fifty percent of the total exterior wall and roof area from the grade up, including all exterior openings. Removing a residential second unit or converting a duplex into a single unit is considered a demolition. The following activities shall not be considered to be demolitions within the meaning of this definition: a retrofit (see Section 19.08.458); maintenance, repair and/or replacement of exterior surfaces, so long as the materials are consistent with the requirements of Section 20.04.140 “Materials and colors used;” and other maintenance efforts deemed by the Building and Planning Departments to be minor in nature and scope. It is the intent of this definition to ensure that all alterations to existing structures that are part of a major project for the remodel, alteration, construction, or repair of a home or accessory structure are reviewed by the City through a Design Review process, pursuant to Title 20 of the Belvedere Municipal Code. (Ord. 2011-4 § 10, 2011; Ord. 2006-1 § 2, 2006; Ord. 2000-2 § 2, 2000; Ord. 98-3 § 2, 1998.)