Country: Japan

Architectural code and regulatory reference for projects in Japan (all 47 prefectures + Tokyo Metropolis). Activate this skill on any Japanese city/prefecture reference, JPY currency, mention of "Kenchiku Kijun Ho"/"BSL"/"Sho-Energy Ho"/"CASBEE"/"AIJ"/"BCJ"/"Shintaishin", or Japanese architectural terminology (yoseki-ritsu, kenpei-ritsu, kakunin-shinsei, kanseikensa, joryoku-do, koshou-tatemono, mokuzo).

1. Regulatory Hierarchy

Japan operates as Archetype D (Centralised National + Strong-Form Clauses). Building regulation is national, administered through prefectures + designated cities under Building Standards Act delegated authority. Some matters are devolved to designated cities.

1.1 Authority Stack