If you aren?t sure whether your house is at risk from earthquakes, check with your local building official, city engineer, or planning and zoning administrator. They can tell you whether you are in an earthquake hazard area. Also, they usually can tell you how to protect yourself and your house and property from earthquakes.

Earthquake protection can involve a variety of changes to your house and property ? changes that can vary in complexity and cost. You may be able to make some types of changes yourself. But complicated or large-scale changes and those that affect the structure of your house or its electrical wiring and plumbing should be carried out only by a professional contractor licensed to work in your state, county, or city.  
One example of earthquake protection is bolting the sill plates of your house to its foundation to increase structural stability. This is something that only a licensed contractor should do.

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