Remodeling is a growing number in Japan but, the price trend is not known about the actual situation. We was determine to the status by the analysis with estimate sheet. The analysis was applied statistical techniques that estimate sheet from the three companies was collected over three years. In results of this study, the total floor area, number of building showed that significant impact on construction costs. Potential variables include height, area and construction carried out was determined to affect the condition. In addition, the construction years and repair cycle showed little impact.