On September21 1999, a severe earthquake occurred in central Taiwan. Zones around Chelungpu fault, the earthquake source fault, suffered particularly great damage. After the earthquake, Taiwan government decided to impose building restrictions both in city planning area and in non-city planning area within the trace of Chelungpu fauit. This paper shows the conditions and problems of the buildings restriction based on an examination of documents and interviews. In this paper, firstly, a brief outline of 921 Chi-Chi earthquake is presented. Secondly, the contents of buildings restrictions are introduced. Thirdly, issues concerning relocations from fault zones are discussed. Finally, risk mitigation strategies of zones around the trace of active faults in Japan are examined.
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