In this study, a seismic response analysis of 2-story wooden houses has been carried out, and guidelines for proper seismic rehabilitation have been considered. In the analysis, the bilinear + slip model is adopted as the restoring-force characteristics because in previous studies it has been confirmed that the model reproduces characteristics of wooden houses relatively well. First, it was investigated how much the first story stiffness affects the inertia force of the roof during an earthquake. Next, the effects of roof mass were examined. Finally, in the case where an anti-seismic shelter was placed on the ground floor, a suitable connection method to the house was considered.