What electrical code violations are most common in California ADU legalization (amnesty) cases?

California's ADU amnesty (legalization) programs let owners bring previously unpermitted units up to code, and the electrical system is almost always where the most violations surface — because the original work was usually done without permits, inspection, or current code knowledge. Knowing the usual suspects helps you scope the corrections before an inspector does.

The most common findings

1. No permit on the original work. The entire system was installed and concealed without inspection, so everything is suspect until verified.
2. Non-GFCI outlets in kitchens, bathrooms, garages, and outdoor locations — a leading shock hazard and an easy inspector catch.
3. Missing AFCI protection in bedrooms and habitable spaces. AFCI is a more recent requirement that many older unpermitted units predate entirely.
4. Inadequate panel working clearance. Code requires roughly a 30-inch-wide by 36-inch-deep clear working space in front of the panel; unpermitted panels are often buried in closets or behind storage.
5. Aluminum branch-circuit wiring from 1960s–1970s construction, which requires special terminations/connectors to be safe.
6. Double-tapped breakers — two conductors landed on a single breaker terminal not listed for it.
7. Reversed polarity — hot and neutral swapped at receptacles.
8. Missing or improperly installed ground-fault protection at required wet locations.

Issues specific to subpanels and conversions

• Improper neutral-ground bonding in a subpanel — neutral and ground tied together downstream of the main, which is a serious safety defect.
• Undersized or unprotected feeders to a converted garage or detached unit, often without proper grounding electrodes.
• Missing dedicated circuits for the range, HVAC, or water heater because the space was never wired as a dwelling.
• Smoke and CO alarms absent or not interconnected.

How to approach legalization

Start with an assessment by a licensed electrician, then commission a corrected, permit-ready plan set that documents the load calculation, panel schedule, GFCI/AFCI coverage, and alarm locations. Trying to legalize off the old, undocumented wiring almost guarantees repeated corrections.

Requirements vary by jurisdiction — your local building department's amnesty program will define exactly what must be corrected and inspected. Our electrical plans are commonly used for legalization, and two revisions plus city corrections are included; see how it works or place an order to get started.