California Insurance Code 12500-12502
12500. An admitted mortgage insurer may insure the payment of authorized real estate securities subject to the restrictions in this article. A mortgage insurer shall not insure the payment of any form of security other than an authorized real estate security. 12501. A mortgage insurer shall not insure the payment of any security secured by a single mortgage in any case where the aggregate principal of the security is in excess of fifteen per cent of the insurer's then paid-in capital. 12502. An insurer shall not at any time have outstanding mortgage policies insuring the payment of securities having an aggregate unpaid principal exceeding twenty times the amount of the insurer's paid in capital.
