Torrance's Accessory Structures: The Rules That Matter

Every city handles accessory structures a little differently. In Torrance, California, there are 5 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Garage Conversions

Torrance allows garage conversions to ADUs under TMC §92.2.10. Replaced parking is not required. JADUs up to 500 sq ft can be built within attached garages. Ministerial approval within 60 days.

Key details: Code Section: TMC §92.2.10. Replacement Parking: Not required for conversions. JADU in Garage: Up to 500 sq ft. Setback Exemption: For existing structure conversions. Review Period: 60 days max.

Unpermitted garage conversions face code enforcement action. The conversion must receive building permit approval and comply with building code standards for habitable space.

Shed Rules

Torrance regulates accessory structures under TMC Division 9. Conversions of existing structures to ADUs are exempt from size limits when no expansion beyond 150 sq ft occurs.

Key details: Code Section: TMC Division 9. ADU Conversion: No size limit if no expansion >150 sf. FAR Exclusion: ADUs excluded from §91.4.8(d). Pre-Approved Plans: Available from Building & Safety. Contact: (310) 618-5990 (Planning).

Unpermitted accessory structures or conversions face code enforcement action. Building permits are required for most construction.

ADU Rules

Torrance regulates ADUs under TMC §92.2.10. Attached ADUs limited to 50% of primary dwelling; detached up to 1,200 sq ft. Maximum 16 feet height for detached, 25 feet for attached. Ministerial review within 60 days.

Key details: Code Section: TMC §92.2.10. Detached Max: 1,200 sq ft. Attached Max: 50% of primary dwelling. Max Height (detached): 16 feet. Review Period: 60 days ministerial.

Unpermitted ADUs face code enforcement action. ADUs used as short-term rentals violate TMC §92.2.10.

Tiny Homes

Tiny homes on wheels are not permitted as permanent dwellings. Fixed tiny homes must meet ADU or accessory structure standards under TMC Division 9.

Key details: On Wheels: Not permitted as dwelling. Fixed Structure: Must meet ADU/accessory rules. Max ADU Size: 1,200 sq ft detached. Min Setback: 4 ft side/rear for ADU.

Unpermitted dwellings: removal or retroactive permitting. Zoning violations: fines and required relocation. Occupancy without certificate: prohibited.

Carport Rules

Carports in residential zones require building permits and must comply with setback and height requirements for accessory structures in the applicable zone.

Key details: Permit: Required for new carports. Max Height: 14 ft in R-1 zone. Rear Setback: 1 ft if one-hour wall, no openings. Side Setback: 1 ft on one interior side only.

Unpermitted carports: stop-work orders, required removal or retroactive permitting with penalty fees. Fines $200 to $1,000.

The Bottom Line

Torrance's accessory structures rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Torrance is broadly strict or permissive.

This guide is based on Torrance's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.