Estimation of Interior Materials and Household Goods Stock in Housing for a Circular Economy

Abstract

A comprehensive understanding of the available resources in cities is essential for the successful implementation of a circular economy. In current building stock estimation, “interior materials and household goods” have not been considered yet. Therefore, this study focused on them and created their intensity. The purpose of this study is to clarify the location and quantity of recyclable materials. I estimated the intensity of interior materials and household goods and compared it with the intensity of structural materials from previous studies. As a result, it was estimated that an amount equivalent to about 3%–4% of the structural material in the wooden house by 2×4 construction method is accumulated in a house as interior materials and household goods.