Yokohama wooden house seismic retrofit improvement promotion business design, construction company registration system Toward citizens

When you click ward name, you can see list for each ward and company registration vote (PDF file) of each company.
Aoba Ward　Asahi Ward　Izumi Ward　Isogo Ward　Kanagawa Ward
Kanazawa Ward　Konan Ward　Kohoku Ward　Sakae Ward　Seya Ward
Tsuzuki Ward  　Tsurumi Ward　Totsuka Ward　Naka Ward　Nishi Ward
Hodogaya Ward　Midori Ward　Minami Ward

※When applying for design and construction to a company that is not a registered company and applying, a temporary registration application for the design and construction company is required when submitting application documents. There are requirements for temporary registration of design and construction companies, so please see the application guide (PDF: 4,611KB) for details.
※It is recommended that you consult with multiple operators and select a company that suits your needs because the availability and characteristics of design and construction vary depending on the company.

Registered businesses are registered in "design", "construction" or both. The registered category can be confirmed by the “●” mark in the “Category” column of the registered business list and the “Registration category” in the business registration slip.

• "Design" Businesses registered in categories: A company that designs seismic retrofitting.
• "Construction" Businesses registered in categories: A company that performs construction (construction) seismic retrofitting.
• Businesses registered in the "Design / Construction" category: A company that performs both design and construction (construction) of seismic retrofitting.

※When using the subsidy system, please consult with a company registered in the category of "design" or "design / construction".

• Subsidy system use results: "Yes" ... It is a company that has designed or constructed (construction) seismic retrofitting of wooden houses using the city's subsidy system.
• Subsidy system usage results are "None" ... It is a company that has designed or constructed (construction) seismic retrofitting of wooden houses without using the city's subsidy system.

Yokohama City has established three types of seismic diagnosis methods used for seismic retrofit design of wooden houses. For businesses registered in the design category, the availability of each seismic diagnosis method is described. The characteristics of each seismic diagnosis method are as follows.

[Precise diagnosis type] ・・ ・ It is possible to accurately grasp the current situation and carry out appropriate reinforcement work according to the actual situation.

[General diagnosis type] ・・ ・ Although the burden of the survey is small, the effect of suppressing construction costs is low because the assumed value is used.

[Wall-Sufficient type] ・・ ・ The minimum necessary reinforcement work can be carried out to reduce the amount of money and prevent collapse.

※[Precise diagnosis type] [General diagnosis type] [Wall-Sufficient type] The name of Yokohama City was originally defined by Yokohama City.

Depending on the company, the "method" and "cost" to create a quotation for seismic retrofitting work differ. Please refer to the contents and check the details over the phone before requesting.

※Some businesses have stated estimates for design costs only, so please check by phone for details.

The “Payment method” and “time” of design and construction costs differ depending on the operator. Please refer to the contents and check the details over the phone before requesting.

Describes whether or not to consult if you want to use a special construction method. Please contact us with reference to the details.