(a)Unless the insurance contract otherwise provides, a person insured is entitled to a return of premium if the policy is canceled, rejected, surrendered, or rescinded, as follows:
(1)To the whole premium, if the insurer has not been exposed to any risk of loss.
(2)Where the insurance is made for a definite period of time and the insured surrenders his policy, to such proportion of the premium as corresponds with the unexpired time, after deducting from the whole premium any claim for loss or damage under the policy which has previously accrued. The provisions of Section 482 apply only to the expired time.
(b)No contract for individual motor vehicle liability or homeowners' multiple-peril insurance may contain a provision which mandates that the premium for such policy shall be fully earned upon the happening of any contingency except the expiration of the policy itself. This subdivision shall not apply to policy fees or membership fees.
(c)This section shall not apply to policies of ocean marine insurance. For purposes of this section, "ocean marine insurance" means insurance of vessels or crafts, their cargos, marine builders' risks, marine protection and indemnity, or other risks commonly insured under marine insurance governed by the provisions of Chapter 1 (commencing with Section 1880) of Part 1 of Division 2, and as distinguished from inland marine insurance policies.