Insurance Code (usually included in commercial codals)
Section 172. Whenever the insured desires to have a valuation named in his policy, insuring any building or structure against fire, he may require such building or structure to be examined by an independent appraiser and the value of the insured's interest therein may then be fixed as between the insurer and the insured. The cost of such examination shall be paid for by the insured. A clause shall be inserted in such policy stating substantially that the value of the insured's interest in such building or structure has been thus fixed. In the absence of any change increasing the risk without the consent of the insurer or of fraud on the part of the insured, then in case of a total loss under such policy, the whole amount so insured upon the insured's interest in such building or structure, as stated in the policy upon which the insurers have received a premium, shall be paid, and in case of a partial loss the full amount of the partial loss shall be so paid, and in case there are two or more policies covering the insured's interest therein, each policy shall contribute pro rata to the payment of such whole or partial loss. But in no case shall the insurer be required to pay more than the amount thus stated in such policy. This section shall not prevent the parties from stipulating in such policies concerning the repairing, rebuilding or replacing of buildings or structures wholly or partially damaged or destroyed.