Cal. Ins. Code § 10082.3
Notwithstanding any other provision of law, the following provisions regarding loss requirements, appraisals, and adjusters shall apply to the following types of policies originated or renewed on and after January 1, 2002: all policies of residential property insurance, as defined in Section 10087, all policies, endorsements, or certificates of insurance providing coverage for loss or damage caused by the peril of earthquake issued pursuant to this chapter; and all policies of basic residential earthquake insurance issued pursuant to Chapter 8.6 (commencing with Section 10089.5).
Requirements in case loss occurs
The insured shall give written notice to this company of any loss without unnecessary delay, protect the property from further damage, forthwith separate the damaged and undamaged personal property, put it in the best possible order, furnish a complete inventory of the destroyed, damaged and undamaged property, showing in detail quantities, costs, actual cash value and amount of loss claimed; and within 60 days after the loss, unless the time is extended in writing by this company, the insured shall render to this company a proof of loss, signed and sworn to by the insured, stating the knowledge and belief of the insured as to the following: the time and origin of the loss, the interest of the insured and of all others in the property, the actual cash value of each item thereof and the amount of loss thereto, all encumbrances thereon, all other contracts of insurance, whether valid or not, covering any of said property, any changes in the title, use, occupation, location, possession or exposures of said property since the issuing of this policy, by whom and for what purpose any building herein described and the several parts thereof were occupied at the time of loss and whether or not it then stood on leased ground, and shall furnish a copy of all the descriptions and schedules in all policies and, if required and obtainable, verified plans and specifications of any building, fixtures or machinery destroyed or damaged. The insured, as often as may be reasonably required and subject to the provisions of Section 2071.1, shall exhibit to any person designated by this company all that remains of any property herein described, and submit to examinations under oath by any person named by this company, and subscribe the same; and, as often as may be reasonably required, shall produce for examination all books of account, bills, invoices and other vouchers, or certified copies thereof if originals be lost, at such reasonable time and place as may be designated by this company or its representative, and shall permit extracts and copies thereof to be made. The insurer shall inform the insured that tax returns are privileged against disclosure under applicable state law but may be necessary to process or determine the claim.
The insurer shall notify every claimant that they may obtain, upon request, copies of claim-related documents. For purposes of this section, "claim-related documents" means all documents that relate to the evaluation of damages, including, but not limited to, repair and replacement estimates and bids, appraisals, scopes of loss, drawings, plans, reports, third party findings on the amount of loss, covered damages, and cost of repairs, and all other valuation, measurement, and loss adjustment calculations of the amount of loss, covered damage, and cost of repairs. However, attorney work product and attorney-client privileged documents, and documents that indicate fraud by the insured or that contain medically privileged information, are excluded from the documents an insurer is required to provide pursuant to this section to a claimant. Within 15 calendar days after receiving a request from an insured for claim-related documents, the insurer shall provide the insured with copies of all claim-related documents, except those excluded by this section. Nothing in this section shall be construed to affect existing litigation discovery rights.
Appraisal
In case the insured and this company shall fail to agree as to the actual cash value or the amount of loss, then, on the written request of either, each shall select a competent and disinterested appraiser and notify the other of the appraiser selected within 20 days of the request. Where the request is accepted, the appraisers shall first select a competent and disinterested umpire; and failing for 15 days to agree upon the umpire, then, on request of the insured or this company, the umpire shall be selected by a judge of a court of record in the state in which the property covered is located. Appraisal proceedings are informal unless the insured and this company mutually agree otherwise. For purposes of this section, "informal" means that no formal discovery shall be conducted, including depositions, interrogatories, requests for admission, or other forms of formal civil discovery, no formal rules of evidence shall be applied, and no court reporter shall be used for the proceedings. The appraisers shall then appraise the loss, stating separately actual cash value and loss to each item; and, failing to agree, shall submit their differences, only, to the umpire. An award in writing, so itemized, of any two when filed with this company shall determine the amount of actual cash value and loss. Each appraiser shall be paid by the party selecting him or her and the expenses of appraisal and umpire shall be paid by the parties equally. In the event of a government-declared disaster, as defined in the Government Code, appraisal may be requested by either the insured or this company but shall not be compelled.
Adjusters
If, within a six-month period, the company assigns a third or subsequent adjuster to be primarily responsible for a claim, the insurer, in a timely manner, shall provide the insured with a written status report. For purposes of this section, a written status report shall include a summary of any decisions or actions that are substantially related to the disposition of a claim, including, but not limited to, the amount of losses to structures or contents, the retention or consultation of design or construction professionals, the amount of coverage for losses to structures or contents and all items of dispute.
Ca. Ins. Code § 10082.3