Cal. Ins. Code § 12640.11

(a) Nothing in this chapter (commencing with Section 12640.01) shall be construed as limiting the right of any mortgage guaranty insurer to impose reasonable requirements upon the lender with regard to the terms of any note or bond or other evidence of indebtedness secured by a mortgage or deed of trust, such as requiring a stipulated down payment by the borrower.
(b) All statements and descriptions in any application for mortgage guaranty insurance or in negotiations for that insurance, and all documents relating thereto, submitted to the mortgage guaranty insurer shall be deemed to be representations and not warranties. Furthermore, misrepresentations and incorrect or incomplete statements in any such application, negotiations, and all documents relating thereto shall not prevent a recovery under a policy of mortgage guaranty insurance unless:
1. (1) Fraudulent; or
2. (2) Material either to the acceptance of the risk or to the hazard assumed by the insurer; or
3. (3) The insurer in good faith would either not have issued the mortgage guaranty insurance policy or extended coverage thereunder, or would not have issued the policy or extended coverage in as large an amount or at the premium rate as applied for or would not have provided coverage with respect to the hazard resulting in the loss if the true facts had been known to the insurer as required by the application for the policy or for the extension of coverage or otherwise.