2008 年 10 巻 p. 195-204
The promotions of seismic retrofitting of decrepitude houses are important to reduce the damage by a great earthquake expected in the future. In this study, we calculated the number of houses that were insufficient quake resistance, and investigated the incentive measures of major local governments for promotions of seismic retrofitting.One problem is the lack of measures for rental houses, and the other is the lack of punitive measures for the owners of decrepitude houses. We proposed and verified that the measures on restrictions of leaseholds for rental houses, and the punitive measures for the owners of decrepitude houses as the increases of property tax and registration license tax.