ADU rules in Stockton, CA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Stockton allows accessory dwelling units (ADUs) and junior ADUs (JADUs) on single-family lots through ministerial (no hearing) review consistent with California Government Code 65852.2 and 65852.22. JADUs are capped at 500 sq ft and must be contained within the walls of the existing single-family dwelling.
Per the City of Stockton Building & Life Safety ADU program page, an ADU is 'an attached or detached residential dwelling unit on the same lot as an existing or proposed single-family dwelling' that provides independent sleeping, eating, cooking, and sanitation. A JADU is limited to 500 sq ft and must be contained entirely within the walls of an existing or proposed single-family residence, with an efficiency kitchen and either a private or shared bathroom. Stockton's Development Code (Title 16) implements the state ADU framework — Gov. Code §65852.2 (ADUs) and §65852.22 (JADUs) — which mandates ministerial approval within 60 days, prohibits owner-occupancy requirements for ADUs permitted between Jan 1, 2020 and Jan 1, 2025, and requires that ADUs may not be rented for terms shorter than 30 days.
Building or occupying an ADU/JADU without permits is a violation of Stockton Municipal Code Title 15 (Building Code) and Title 16 (Development Code). Code enforcement may issue a notice of violation, require permits or removal, and assess administrative penalties under SMC Chapter 1.20. Unpermitted ADUs built before Jan 1, 2020 may qualify for amnesty legalization without impact fees (utility upgrade costs may still apply).
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Side-by-side rule comparisons with other cities in San Joaquin County.
See how other cities in San Joaquin County handle adu rules.
See how Stockton's adu rules rules stack up against other locations.
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