An “accessory dwelling unit” (ADU) is a self-contained second residential unit that is subordinate to a primary single-family detached dwelling. The ADU provides a completely independent dwelling unit with facilities for cooking, eating, sanitation and sleeping. The ADU may be added to or created within the primary dwelling, it may be connected to the primary dwelling unit by the foundation, floor, walls, ceiling, and roof, or it may be a separate, detached building from the building containing the primary residence. (Ord. 3239 § 5, 2016; Ord. 2823 § 2, 2010; Ord. 2051 § 1, 1995)