No policy of residential property insurance may be issued or delivered or, with respect to policies in effect on the effective date of this chapter, initially renewed in this state by any insurer unless the named insured is offered coverage for loss or damage caused by the peril of earthquake as provided in this chapter. That coverage may be provided in the policy of residential property insurance itself, either by specific policy provision or endorsement, or in a separate policy or certificate of insurance which specifically provides coverage for loss or damage caused by the peril of earthquake alone or in combination with other perils.
Ca. Ins. Code § 10081