Cal. Ins. Code § 6047
Except as provided in this section, such insurer shall not issue policies to an amount in excess of six thousand dollars ($6,000) on any one risk, whether under one or more policies, without immediately reinsuring the excess amount in some other insurer. Any such insurer having more than ten million dollars ($10,000,000) direct insurance in force as shown by its books may, for each one million dollars ($1,000,000) in excess of ten million dollars ($10,000,000), write five hundred dollars ($500) additional insurance in excess of six thousand dollars ($6,000) on each such risk; provided, however, that any such insurer 90 percent of whose business in force is reinsurance assumed and which has more than ten million dollars ($10,000,000) gross insurance in force may, for each one million dollars ($1,000,000) in excess of ten million dollars ($10,000,000), write five hundred dollars ($500) additional insurance in excess of six thousand dollars ($6,000) on each such risk. Any such insurer issuing nonassessable policies as provided in Section 7015 (c) (3) hereof, may issue policies in accordance with Section 3080 of this code.
Ca. Ins. Code § 6047