Garage conversion rules in Manteca, CA — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Garage conversions in Manteca must comply with state ADU law if creating a habitable dwelling unit. Conversions to non-residential uses (storage, hobby rooms) do not require ADU processing but must comply with building code and zoning setbacks under MMC Title 17.
Converting a garage into an ADU (living quarters with kitchen and bath) is processed under MMC Chapter 17.82 (ADU ordinance) and CA Gov. Code §65852.2. Under AB 2221, garage conversions to ADUs are permitted by right and cannot be denied solely for lack of replacement parking. Conversions to non-dwelling uses (home offices, gyms, storage) require a building permit for any structural or electrical changes. Replacement parking for the lost garage is not required for ADU conversions under state law. Contact Building Safety Division (209) 456-8550 for specific permit requirements.
Unpermitted garage conversion: stop-work order, retroactive permit, and fines.
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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 garage conversions.
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