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Seismic resistance of specified buildings
Last Updated April 19, 2024
The subsidy project for Yokohama City Specific Building Seismic Retrofit Improvement is a seismic diagnosis of buildings used by many people, such as hospitals, schools, stores, offices, etc., and buildings along roads that should be secured in the event of an earthquake disaster. This is a system to support a part of the cost for seismic retrofitting design, seismic retrofitting, and removal.
Brochure
Target buildings
- Before applyingPrior consultation slip (word: 25KB)Please fill in the form and consult with the Building Disaster Prevention Section.
- About book necessary for assistance application
1 Buildings subject to mandatory seismic diagnosis
Private buildings that were started before May 31, 1981 and fall under (A) or (B)
（A） Emergency safety confirmation Large-scale buildings | Buildings used by unspecified large numbers of people, buildings used by people who need special consideration in securing evacuation, or large-scale buildings among storage or treatment plants for dangerous goods |
|---|---|
（B） Buildings listed in the safety confirmation plan required | Among the roads that should be secured in the event of an earthquake disaster, buildings whose site is in contact with particularly important roads (* 1), those with a certain height or higher (* 2) |
2 Buildings excluding buildings subject to earthquake-resistant diagnosis among specified buildings
Buildings started before May 31, 1981, excluding those subject to seismic diagnosis among private buildings corresponding to (C) or (D)
（C） Buildings used by a large number of people and buildings used by those who require special consideration in securing evacuation | Buildings used by a large number of people and buildings used by those who require special consideration in securing evacuation |
|---|---|
（D） Roadside buildings that should be secured in the event of an earthquake disaster | Buildings where the site contacts roads (* 3) that should be secured in the event of an earthquake disaster, with a certain height (* 4) or more ("Yokohama City Condominium Seismic Diagnosis Support Project" and "Yokohama City Condominium Seismic Retrofit Improvement Promotion Project" Excludes buildings subject to the above) |
Contents of assistance
Subsidiary requirements
- For seismic diagnosis, standard work and other quotations are required.
- It is necessary to obtain a third-party evaluation of a rating organization, etc. for seismic diagnosis and seismic retrofitting design.
- Those who perform seismic diagnosis and seismic retrofitting design must be qualified as a diagnostician.
- Regarding seismic retrofitting design, seismic retrofitting, and subsidies for removal, those that are determined to be insufficient as a result of the seismic diagnosis are eligible.
- In the case of buildings subject to seismic diagnosis, subsidies (emergency seismic measures emergency promotion project subsidies) have been separately issued by the government for projects other than the "diagnosis" in (A large-scale obligation). However, it was added to the city's subsidy from 2021 and will be unified as a city subsidy.
Flow of Application
Regarding the application procedure, in addition to the reception at the counter, we also accept reception by e-mail or mail.
Subsidized amount
（１） The total amount of (2) and (2) will be the subsidy amount.
（１） The lowest of the following 1, 2, and 3
①Cost required for seismic diagnosis x subsidy rate 1 (* 5)
②Project cost limit (* 6) x subsidy rate 1 (* 5)
③3.6 million yen ((Large C subsidy), (D roadside assistance) only)
（２） Lower of the following 1 and 2:
①Cost required for seismic diagnosis x subsidy rate 2 (* 5)
②Project cost limit (* 6) x subsidy rate 2 (* 5)
| Type of building | Subsidiary rate 1 | Subsidiary rate 2 |
|---|---|---|
| (A Large-scale Obligation) | ５／６ | ０ |
(B Roadside obligations) | α／４ (If it exceeds 1/6, 1/6) | |
(C Large-scale assistance) | ２／３ | ０ |
α in the table is “Calculated by (1)” / “Expenses required for seismic diagnosis *” | ||
| Total area | Limits | Remarks |
|---|---|---|
| Buildings within 1,000 m2 | Amount obtained by multiplying 3,670 yen by a | If expenses other than the cost required for normal seismic diagnosis, such as restoration of design documents or evaluation of a third-party evaluation organization, can be added up to 1,570,000 yen to the amount calculated from the table. |
| More than 1,000 m2 Buildings within 2,000 m2 | 3,670,000 yen | |
| Buildings over 2,000 m2 | 5,240,000 yen | |
| A in the table is the total area of buildings | ||
Subsidized amount
（１） The total amount of (2) and (2) will be the subsidy amount.
（１） Lower of the following 1 and 2:
①Cost required for seismic retrofit design x 2/3
②3.6 million yen (200,000 yen for wooden buildings)
（２） Cost required for seismic retrofit design x subsidy rate 2 (* 7)
| Type of building | Subsidiary rate 2 |
|---|---|
(A Large-scale Obligation) | １／３－α／４ |
(B Roadside obligations) | α／４ |
(C Large-scale assistance) | ０ |
| α in the table is “Calculated amount based on (1)” / “Expenses required for seismic retrofit design” | |
Subsidized amount
（１） The total amount of (2) and (3) is the subsidy amount.
（１） The lowest of the following 1, 2, and 3
①Cost required for seismic retrofitting work x subsidy rate 1 (* 8) + Cost required for construction supervision x 2/3
②Project cost limit of seismic retrofitting work 1 (* 9) x subsidy rate 1 (* 8) + cost required for construction supervision x 2/3
③Subsidy limit (*10)
（２） Lower of the following 1 and 2:
①Cost required for seismic retrofitting work x subsidy rate 2 (* 8) + cost required for construction supervision x subsidy rate 2 (* 8)
②Project cost limit of seismic retrofitting work 2 (* 11) x subsidy rate 2 (* 8) + cost required for construction supervision x subsidy rate 2 (* 8)
（３） Of the following 1, 2, and 3, only for buildings with a low amount ((Road B) and tenants). Requirements for tenants, etc.
Please refer to the brochure for details.
①Amount obtained by multiplying the cost required for seismic retrofitting work by 1/15
②Amount obtained by multiplying the total rent for six months under the lease agreement by 2/3
③Subsidy limit: 1.8 million yen
| Type of building | Subsidiary rate 1 | Subsidiary rate 2 | |
|---|---|---|---|
| Seismic Retrofitting | Seismic Retrofitting | Construction supervision | |
(A Large-scale Obligation) | １／３ | 0.115＋31α／69 (131/600 if it exceeds 131/600) | １／３－β／４ (1/6 if it is less than 1/6) |
(B Roadside obligations) | ２／３ | α／10 (1/15 if it exceeds 1/15) | β／４ (If it exceeds 1/6, 1/6) |
(C Large-scale assistance) | １／３ | ０ | ０ |
(D Roadside assistance) | ２／３ | ||
α in the table is “Seismic retrofitting work out of the calculated amount in (1)” / “Expenses required for seismic retrofitting work *” | |||
| Building classification | For general construction methods | In the case of special construction methods such as seismic isolation method |
|---|---|---|
| Wooden buildings | 2,700,000 yen | |
| Housing | Amount obtained by multiplying 34,100 yen by a | |
Condominium | Amount obtained by multiplying 50,200 yen (or 55,200 yen *) by a | The amount obtained by multiplying 83,800 yen by a |
| Other than the above | The amount obtained by multiplying 51,200 yen (or 56,300 yen *) by a | The amount obtained by multiplying 83,800 yen by a |
A in the table is the total area of buildings | ||
Total area | Limits |
|---|---|
| Less than 5,000 m2 | 20 million yen |
| 5,000m2 or more and less than 10,000m2 | 35 million yen |
| 10,000 m2 or more | 50 million yen |
| Building classification | For general construction methods | In the case of special construction methods such as seismic isolation method |
|---|---|---|
| Housing | Amount obtained by multiplying 34,100 yen by a | |
Condominium | Amount obtained by multiplying 50,200 yen (or 55,200 yen *) by a | The amount obtained by multiplying 83,800 yen by a |
| Other than the above | The amount obtained by multiplying 51,200 yen (or 56,300 yen *) by a | The amount obtained by multiplying 83,800 yen by a |
A in the table is the total area of buildings | ||
Subsidized amount
（１） The total amount of (2) and (3) is the subsidy amount.
（１） The lowest of the following 1, 2, and 3
①Costs required for removal work x 2/3
②Project cost limit 1 (*16) x 2/3
③Subsidy limit (*17)
（２） Lower of the following 1 and 2:
①Costs required for removal work x subsidy rate 2 (*18)
②Project cost limit 2 (* 19) x subsidy rate 2 (* 18)
（３） Of the following 1, 2, and 3, the lower amount (only for buildings with tenants, etc.) Pamphlet for tenant requirements
Please check it out.
①Amount obtained by multiplying the cost required for retirement work by 1/15
②Amount obtained by multiplying the total rent for six months under the lease agreement by 2/3
③Subsidy limit: 1.8 million yen
| Building classification | Operating cost limit 1 |
|---|---|
| Wooden buildings | Amount obtained by multiplying 13,500 yen by a |
| Non-wooden buildings | Amount obtained by multiplying 29,000 yen by a |
| A in the table is the total area of buildings | |
| Total area | Limits |
|---|---|
Less than 2,500 m2 | 10 million yen |
| 2,500 m2 or more | 20 million yen |
| Type of building | Subsidiary rate 2 |
|---|---|
(B Roadside obligations) | α／10 (1/15 if it exceeds 1/15) |
α in the table is calculated by “(1)” / “Expenses required for removal work *” | |
Prior consultation
- Advance consultation slip
- Guide map, layout drawing, floor plan of each floor, elevation, structural drawing, etc.
- Photographs around the site, exterior photos (about several photos)
- A copy of the building confirmation, a copy of the inspection certificate
- Drawings and calculations for seismic diagnosis (in the case of prior consultation on seismic retrofitting design)
- Drawings and calculations for seismic retrofitting design (in the case of prior consultation on seismic retrofitting work)
- Other books deemed necessary by the mayor
Regarding the application procedure, in addition to the reception at the counter, we also accept reception by e-mail or mail.
※Application style download
Seismic diagnosis
- A set of supporting applications
- Current exterior photos of buildings (about several photos)
- Guide maps, layout drawings, floor plans, elevations, structural drawings, etc.
- A document certifying the ownership of the building (issued within 3 months of application)
- A document certifying that all persons who have ownership of the building other than the applicant have obtained consent to apply for the project or a written vote by the sectional owner
- Copy of estimate of earthquake-resistant diagnosis or document showing result of bid (three or more persons * 19)
- Those who can be judged to be qualified for seismic diagnosis prescribed in Article 5, Paragraph 1 of the Enforcement Regulations of the Seismic Retrofit Promotion Act (three or more persons * 19)
- Copy of Architect Office Registration Notice pursuant to the provisions of Article 23, Paragraph 1 of the Architect Law (3 or more persons * 19)
- Copy of Motoichi qualified person list of city company, corporation number printing documents or company registry (three or more * 19)
- Other books deemed necessary by the mayor
- Copy of documents that can identify you (license, insurance card, etc.) (excluding My Number Card) ※20
（※19） If the cost of the project is expected to be 1,000,000 yen or more
（※20） When submitting at the counter, only presentation
Seismic retrofit design
- A set of supporting applications
- Current exterior photos of buildings (about several photos)
- Guide maps, layout drawings, floor plans, elevations, structural drawings, etc.
- A document certifying the ownership of the building (issued within 3 months of application)
- A document certifying that all persons who have ownership of the building other than the applicant have obtained consent to apply for the project or a written vote by the sectional owner
- A copy of the estimate of the seismic retrofit design or a document showing the results of the bidding (3 or more persons * 19)
- Those who can be judged to be qualified for seismic diagnosis prescribed in Article 5, Paragraph 1 of the Enforcement Regulations of the Seismic Retrofit Promotion Act (three or more persons * 19)
- Copy of documents that can confirm the results of the earthquake-resistant diagnosis (unnecessary for buildings that require earthquake-resistant diagnosis)
- Copy of Architect Office Registration Notice pursuant to the provisions of Article 23, Paragraph 1 of the Architect Law (3 or more persons * 19)
- Copy of Motoichi qualified person list of city company, corporation number printing documents or register of company (three or more * 19)
- Other books deemed necessary by the mayor
- Copy of documents that can identify you (license, insurance card, etc.) (excluding My Number Card) ※20
（※19） If the cost of the project is expected to be 1,000,000 yen or more
（※20） When submitting at the counter, only presentation
Notes after the grant is decided
Seismic Retrofitting
- A set of supporting applications
- Current exterior photos of buildings (about several photos)
- Guide maps, layout drawings, floor plans, elevations, structural drawings, etc.
- A document certifying the ownership of the building (issued within 3 months of application)
- A document certifying that all persons who have ownership of the building other than the applicant have obtained consent to apply for the project or a written vote by the sectional owner
- Copy of document showing estimate of earthquake-resistant repair work or result of bid (three or more persons * 19)
- A copy of the estimate of construction supervision or a document showing the results of the bidding (3 or more persons * 19)
- Those who can judge that they are qualified for seismic diagnosis prescribed in Article 5, Paragraph 1 of the Enforcement Regulations of the Seismic Retrofit Promotion Act (construction supervision: 3 or more persons * 19, seismic retrofit design based on seismic retrofit: 1 person)
- Copy of documents that can confirm the results of the earthquake-resistant diagnosis (unnecessary for buildings that require earthquake-resistant diagnosis)
- Copy of Architect Office Registration Notice pursuant to the provisions of Article 23, Paragraph 1 of the Architect Law (3 or more persons * 19)
- Copy of construction business license prescribed in Article 3, Paragraph 1 of the Construction Business Act (three or more persons * 19)
- Copy of Motoichi qualified person list of city company, corporation number printing documents or register of company (three or more * 19)
- A copy of the evaluation report by the Seismic Evaluation Committee, etc. of the Seismic Retrofit Design pertaining to the Seismic Retrofit, a letter of approval for the Seismic Retrofitting, a certificate of the overall plan or a certificate of building confirmed
- Documents confirming the contents of the seismic retrofitting
- Copy of lease agreement and leased parts (only for buildings with tenants, etc.)
- Other books deemed necessary by the mayor
- Copy of documents that can identify you (license, insurance card, etc.) (excluding My Number Card) ※20
（※19） If the cost of the project is expected to be 1,000,000 yen or more
（※20） When submitting at the counter, only presentation
Notes after the grant is decided
Retirement
- A set of supporting applications
- Current exterior photos of buildings (about several photos)
- Guide maps, layout drawings, floor plans, elevations, structural drawings, etc.
- A document certifying the ownership of the building (issued within 3 months of application)
- A document certifying that all persons who have ownership of the building other than the applicant have obtained consent to apply for the project or a written vote by the sectional owner
- Copy of documents showing the estimate of the removal work or the results of the bidding (3 or more persons * 19)
- Copy of documents that can confirm the results of the earthquake-resistant diagnosis (unnecessary for buildings that require earthquake-resistant diagnosis)
- Copy of construction business license prescribed in Article 3, Paragraph 1 of the Construction Business Act (three or more persons * 19)
- Copy of Motoichi qualified person list of city company, corporation number printing documents or company registry (three or more * 19)
- Copy of lease agreement and lease part (only for buildings with tenants, etc.)
- Other books deemed necessary by the mayor
- Copy of documents that can identify you (license, insurance card, etc.) (excluding My Number Card) ※20
（※19） If the cost of the project is expected to be 1,000,000 yen or more
（※20） When submitting at the counter, only presentation
Notes after the grant is decided
Notes
- When delegating the application procedure to an agent, it is necessary to submit a power of attorney.
In addition, it is necessary for a person who is not an administrative scrivener or administrative scrivener corporation to obtain a reward at the request of another person and prepare documents to be submitted to a public office as a business, unless otherwise specified in the law. Please note that it violates the Scrivener Act. - If the cost of the project is expected to be 1 million yen or more, please collect bids or quotes by three or more businesses.
- If the cost pertaining to the business is expected to be 1 million yen or more, it is necessary to collect bids or quotes from city businesses. However, if a subsidy grant decision or overall design approval is received by March 31, 2026, the conditions of some businesses will be eased. For more information, please refer to the following page.
- In principle, consumption tax is not eligible for assistance. However, if the consumption tax amount related to the business is not added to the purchase tax deduction according to the provisions of the Consumption Tax Law at the time of final tax return, it can be included in the subsidized project cost. When we are targeted for consumption tax, presentation of confirmation letter, report is necessary at the time of subsidy grant application and after final tax return. For more information, please contact us.
About disposal of building which received earthquake-resistant repair with subsidy
When demolishing, transferring (including paid), exchanging, lending, etc. of a building that has been retrofitted with a subsidy during the prescribed useful life (10 years in this project), the city and The approval of the country etc. is required. Please note that you may need to return the subsidy for approval.
Please note that if you dispose of your property without approval, it may be judged that it violates the provisions of this project, and the grant of the subsidy will be canceled and the full amount may be refunded.
About reduction system of building which had undergone earthquake-resistant repair
There are tax reductions in property tax and city planning tax and special deductions for income tax and corporate tax for "buildings that require seismic diagnosis" or "houses" that have undergone seismic retrofitting.
- Reduction system for houses that require seismic diagnosis that have undergone seismic retrofitting work
- Reduction system for houses that underwent seismic retrofitting work
- Special measures for seismic retrofitting of houses (outside site)
System outlines, etc.
- Support business system summary such as Yokohama-shi specific building earthquake-resistant repair (the April 1, 2023 enforcement) (PDF: 412KB)
- Subsidy grant point (the April 1, 2023 enforcement) pertaining to supporting business such as Yokohama-shi specific building earthquake-resistant repair (PDF: 730KB)
Subsidiary business, reference such as specific building earthquake-resistant repair
City of Yokohama, Housing and Architecture Bureau Planning Department Building Disaster Prevention Section (Reception hours: Weekdays from 8:45 am to 12:00 am and from 1:00 pm to 5:15 pm)
Telephone: 045-671-2928、FAX： 045-663-3255、E-MAIL： kc-taishin@city.yokohama.jp
〒231-0005 6-50-10 Honcho, Naka-ku, Yokohama City Hall 25F (Guide map)
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Inquiries to this page
Building Disaster Prevention Section, Housing and Architecture Bureau Planning Department
Telephone: 045-671-2928
Telephone: 045-671-2928
Fax: 045-663-3255
Email address: kc-taishin@city.yokohama.jp
Page ID: 638-001-001
