Share of ZEH in new custom-built detached homes Japan FY 2022, by constructor

In the fiscal year 2022, newly built zero energy houses (ZEH) accounted for 68.2 percent of new custom-built detached houses that were constructed by home builders in Japan. The share was much lower for ZEH built by building contractors.
Building contractors often are small, local companies, and customers have a high degree of freedom to design the house themselves. In contrast, house builders are bigger companies that usually have sales offices nationwide. Here, customers have less freedom in designing the home themselves as they choose from standard equipment and floor plans.