This chapter describes earthquake insurance as a mitigation strategy. To decide whether to buy earthquake insurance, homeowners need to know how much insurance costs and what the estimated benefits of purchasing insurance are. Earthquake insurance has been available since 1916 and may be purchased simply as an addendum to fire insurance policies. In addition to specifying that insurers must offer earthquake insurance, the legislation states that an offer must be made by certified mail to demonstrate a conclusive presumption that it is voluntarily declined. Earthquake insurance is an important economic measure that the household can adopt to prevent some of the devastating economic consequences of an earthquake. The experience of paying a premium for a small amount of earthquake coverage may have made the public more aware of the utility of catastrophic earthquake insurance as an economic protection against the impacts of major damaging earthquakes.