It's a lack shared by most states. The best thing they could add to California self-defense law is an immunity provision, but most states don't have one. Apart from that California self-defense laws are quite good. Ohio is actually the worst.
“Apart from that, Mrs. Lincoln, how did you like the play?”
What good does it do you to defend your life and property if the thief ends up ruining the former and taking all of the latter with a monster civil judgement?