CA Ins Code Section 9084.5

Such association shall not write insurance in excess of ten thousand dollars ($10,000) on any one risk nor in excess of sixty thousand dollars ($60,000) in any one city block within an incorporated city without immediately reinsuring all the excess amount. An association may write insurance for an amount not exceeding sixty thousand dollars ($60,000) on any one risk, if the excess over ten thousand dollars ($10,000) is reinsured as provided in this section. Such associations may not accept reinsurance but may reinsure risks if such reinsurance is by contracts and with reinsurers which meet the standards therefor prescribed in Sections 922.1 to 922.8 of this code.