Can I Put My Brother On My Car Insurance? 
Auto insurance is on the automobile not the driver . The automobile is linked to the household of the primary insured and in California the policy is a family policy covering all members of the household . If your brother is in the household you dont need to add him , he is already included . You should notify your insurance company that your brother is in the household . If he is not in your household he may operate your vehicle since coverage follows the vehicle . 