Sapporo Finalizes 2026–2030 Quake-Safety Plan as Osaka and Tokyo Update Seismic Goals

Overview

• Sapporo released its fourth Seismic Retrofit Promotion Plan, setting goals and actions for city buildings from fiscal 2026 through 2030 and publishing the full plan and summary PDFs.
• City officials in Sapporo closed a public comment period on the draft and reported 18 opinions from four respondents, then finalized the plan.
• Osaka revised its municipal retrofit plan with new targets that reflect a July 2025 national basic policy update and Osaka Prefecture’s renewed 10‑year strategy.
• Osaka said many homes and buildings still lack sufficient earthquake resistance and called faster retrofitting urgent, noting it has published mandatory diagnostic results from prior years.
• Tokyo Metropolitan Government also updated its plan, focusing on structures along emergency transport roads and housing, and posted the revision on its seismic portal site.