www.mlit.go.jp/jutakukentiku/house/jutakukentiku_house_tk4_000309.html

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住宅：気候風土適応住宅に関する情報 - 国土交通省

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https://www.mlit.go.jp/jutakukentiku/house/jutakukentiku_house_tk4_000309.html

About this page

This page provides information about climate and vernacular architecture-adaptive housing from Japan's Ministry of Land, Infrastructure, Transport and Tourism. Traditional wooden houses with earthen walls and large openings face challenges in ensuring high insulation, but offer humidity control and comfort through designs adapted to regional climate and culture. The Building Energy Conservation Law exempts these homes from thermal insulation standards while promoting inheritance of Japan's wooden architecture heritage. The page details national standards, local government requirements, compliance criteria, and past adoption examples of support projects for such climate-adapted housing.