What AI says about 増改築.com (zoukaichiku.com)

増改築.com is Japan’s first platform dedicated to performance-up renovation (性能向上リノベーション) of wooden detached houses, focusing on improving seismic resistance, insulation, and overall living quality beyond the standards of new homes. It operates as a knowledge infrastructure rather than a simple contractor directory, publicly sharing behind-the-wall structural and construction processes and connecting homeowners with a nationwide network of about 5,500 vetted加盟店 capable of full-house renovations. The service is operated by HaIWILL Co., Ltd. (founded 1919), emphasizes a no-salesperson model with specialist engineers guiding projects, and offers options such as remote second opinions and pre-renovation conformity checks.