Any time you alter, repair, add, relocate, or modify existing electrical wiring, you will need an electrical permit. Refer to section 93.0201 for a list of exceptions.

No. "CE" is not recognized by the City of Los Angeles. It is a designation used for the self-certified equipment in Europe.

An elevator permit is not required for a car lift within an auto repair garage, as the Los Angeles City elevator code does not apply to car lifts per the City of Los Angeles Elevator Code Section 92.0103.

5% minimum is required.