To be consideered an Active fault its must have occured less than 11,000 years ago.. You must have a geologist review all maps when purchasing as the USGS grid that is used has a 2000 ft per inch area on those maps. It maps areas that are not active as active and misses area that are active.
#1. Get a survey to outline your property then have a geologist do a physical investigation of the property.
The maps that are furnishsed by the state and Property ID and similar Companies are grossely inaccurate.
As Malibu is in a Zone 4 seismic fault zone you may also find this information helpful. http://www.ci.malibu.ca.us/download/index.cfm/fuseaction/dow Hope you find it helpful.
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