ADU rules in Manteca, CA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Manteca Municipal Code Chapter 17.82 implements state ADU law (CA Gov. Code §65852.2). ADUs are permitted by right in residential and mixed-use zones. One ADU plus one JADU may be constructed on any lot with a single-family dwelling.
MMC Chapter 17.82 allows one Accessory Dwelling Unit (ADU) and one Junior ADU (JADU) on any lot with an existing or proposed single-family dwelling in residential or mixed-use zones. ADUs may be attached, detached, or created from existing space (garage conversions). State law prohibits Manteca from imposing owner-occupancy requirements on ADUs built under AB 2221 (effective Jan 1, 2023). ADU applications are ministerially approved if compliant — no discretionary review or CUP required. For permit inquiries contact Planning Division (209) 456-8500 or visit the ADU Guidebook at hcd.ca.gov. ADUs on lots with multi-family structures may have additional rules.
Unpermitted ADUs: stop-work order, retroactive permit process, 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 adu rules.
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