Stockton, CA Accessory Structures: Tiny Homes (2026)

An Accessory Dwelling Unit (ADU) is an attached or detached residential dwelling unit on the same lot as an existing or proposed single-family dwelling that is zoned for single-family or multifamily use. ADUs provide independent living quarters for one household on the same lot as an existing or proposed single-family or multifamily dwelling, including areas for sleeping, eating, cooking, and sanitation. An ADU may be detached, attached or a converted structure located within the walls of the primary dwelling unit on the lot. Detached: The ADU structure is detached from the primary dwelling unit. Attached: The ADU structure is attached to the primary dwelling unit. Converted: The ADU within the existing primary dwelling unit or the ADU was established through the conversion of an accessory structure, for example, a garage or pool house. A Junior Accessory Dwelling Unit (JADU) is no more than 500 square feet in size and contained/constructed entirely within the walls of an existing single-family structure. The property owner is required to reside in either the main dwelling or the JADU. This may include the conversion of an attached garage but detached accessory structures cannot be converted to JADUs. Efficiency kitchen required: Includes plug-in-type cooking appliances, adequate food prep counter, and refrigerated storage. Sanitation Facilities: May be included in the JADU or may share with the main dwelling. Interior access to the main dwelling is required if sharing bathroom facilities. A JADU is not allowed to be constructed in a multi-family building. The property owner is required to reside in the main dwelling or the JADU, this requirement is documented on a recorded deed restriction. Pre-approved ADU plans are not an option for properties located in a FEMA Special Flood Hazard Area as shown on the current effective Flood Insurance Rate Map.