Section 202 of the 2022 California Building Code and Section R202 of the 2022 California Residential Code are both hereby amended to add the definitions of substantial remodel and second unit as follows:
"Substantial Remodel" shall mean the renovation of any structure, which combined with any additions to the structure, affects a floor area which exceeds fifty percent of the existing floor area of the structure within any twelve-month period. When any changes are made in the building, such as walls, columns, beams or girders, floor or ceiling joists and coverings, roof rafters, roof diaphragms, piles or retaining walls or similar components, the floor area of all rooms affected by such changes shall be included in computing floor areas for the purposes of applying this definition. This definition does not apply to the replacement and upgrading of residential roof coverings, repair or replacement of foundations, the installation of energy efficient windows of like size, or the removal of interior wall coverings solely for the installation of insulation.
"Second Unit" shall mean a completely separate housekeeping unit with kitchen, sleeping and bathroom facilities which is a part of, an extension to, or a separate structure on a site developed with a single-family residence, in excess of the maximum density designated by the zoning district in which the property is situated or as prescribed thereby.
(Ord. 872, passed 12-7-2022)