About authorization of plan of earthquake-resistant repair of building

In Yokohama City, we certify the "Plan for Seismic Retrofitting of Buildings" based on Article 17, Paragraph 3 of the Act on Promotion of Seismic Retrofitting of Buildings (hereinafter referred to as the "Law"). If certified, there are relaxation of the provisions of the Building Standards Law and special measures. In addition, in order to receive the certification, a third party's evaluation is required for the seismic reinforcement plan.

Buildings that will undergo seismic retrofitting

When the plan is approved as conforming to the standards listed in Article 17, Paragraph 3, Item 1, Item 2 and Item 3 of the Seismic Retrofit Promotion Act,

In the case of extension, renovation, large-scale repair, or large-scale remodeling, existing non-qualifications other than earthquake-resistant regulations will not be applied retroactively.

When the plan is approved as conforming to the standards listed in Article 17, Paragraph 3, Item 1, Item 2 and Item 4 of the Seismic Retrofit Promotion Act,

In the case of new construction of pillars, walls, and remodeling of pillars and beams, the provisions of the Building Standards Law pertaining to fire-resistant buildings are not applied.

When the plan is approved as conforming to the standards listed in Article 17, Paragraph 3, Item 1, Item 2 and Item 5 of the Seismic Retrofit Promotion Act,

At the time of extension, it is not subject to the provisions of the Building Standards Law pertaining to floor area ratio.

When the plan is approved as conforming to the standards listed in Article 17, Paragraph 3, Item 1, Item 2 and Item 6 of the Seismic Retrofit Promotion Act,

At the time of extension, the provisions of the Building Standards Law pertaining to the building coverage are not applied.

※If the plan for seismic retrofitting requires a building confirmation or notification of the plan, if the plan is approved, it will be deemed that a certificate of confirmation has been issued.

First of all, please consult in advance. We will inform you about the documents required for certification.

After that, please attach required documents to the certification application form and submit it to the Building Disaster Prevention Section.

• Certification Application Procedure Flow (PDF: 214KB)

• Prior consultation vote (word: 26KB) (prior consultation is required in advance when applying)
• Certification application style (word: 25KB)
• No. 6 style (word: 13KB) (Attachment is required for wooden)
• Certification application summary form (word: 23KB)
• Outline style set (word: 29KB)

Free of charge

• Act on Promotion of Seismic Retrofitting of Buildings (outside site)
• Law enforcement regulations (outside site) about promotion of earthquake-resistant repair of building
• Law enforcement detailed regulations about promotion of earthquake-resistant repair of Yokohama-shi building (PDF: 185KB)
• Law enforcement detailed regulations handling summary about promotion of earthquake-resistant repair of Yokohama-shi building (PDF: 189KB)
• Outline (PDF: 296KB) about authorization of plan based on law Article 17 about promotion of earthquake-resistant repair of Yokohama-shi building