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  8. Regarding changes in conditions of businesses pertaining to the collection of bids or quotes in seismic assistance projects (after April 1, 2021)

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Regarding changes in conditions of businesses pertaining to the collection of bids or quotes in seismic assistance projects (after April 1, 2021)

Last Updated January 15, 2021

Emergency response to COVID-19 infection

From the perspective of preventing the spread of new coronavirus infection, we will also accept application procedures by mail for the time being.
For more information, please contact us by phone. For inquiries, please contact: 045-671-2943 (Condominium), 2928 (Specific Buildings)


  • When you come to the counter, please cooperate with wearing a mask and disinfecting your hands with an alcohol disinfectant.
  • When the window is crowded, you may have to wait outside the office to avoid "close" or "density". We will call you in order, so we apologize for any inconvenience, but we ask for your cooperation.

Outline of Revision

 In the "Yokohama City Condominium Seismic Diagnosis Support Project", "Yokohama City Condominium Seismic Retrofit Improvement Promotion Project" and "Yokohama City Specific Building Seismic Retrofitting Support Project", in principle, if the amount of operating cost is 1 million yen or more It is necessary to collect bid or estimate from other than the city business operator.
 Due to the end of the time limit measures, the relevant regulations will be revised as follows.

Conditions of the business operator pertaining to the collection of bids or quotes
Type of buildingUntil the end of FY2020From FY2021 to the end of FY2025after 2026
Resistant for seismic diagnosisRegardless of the amount of the project cost, seismic diagnosis, renovation design, seismic retrofitting and construction supervision bids for construction supervision or collection of quotes can be performed from city businesses as well as city businesses.

(1) When the subsidized projects are "earthquake-resistant diagnosis" and "removal".

When amount of operating cost becomes 1,000,000 yen or more, collection of bid or estimate must be performed by city company.

(2) If the subsidized projects are "renovation design", "seismic retrofitting" and "stage renovation",

Regardless of the amount of the project cost, bidding for renovation design, seismic retrofitting and construction supervision or collection of quotes can be performed from non-city businesses as well as city businesses.

When amount of operating cost becomes 1,000,000 yen or more, collection of bid or estimate must be performed by city company.
Other than buildings requiring seismic diagnosis

When amount of operating cost becomes 1,000,000 yen or more, collection of bid or estimate must be performed by city company.
However, bids or quotes can be collected from the following businesses.

  • In the case of seismic retrofit design, the company that conducts seismic diagnosis of the building
  • In the case of construction supervision, the company that implements the seismic retrofitting design of the building
  • In the case of the second stage renovation work, the company that implements the first stage renovation work of the building
  • In the case of the second and subsequent partial renovation work, the company that implemented the previous construction of the building
  • Companies that the mayor recognizes as being particularly reasonable

Revision image

Conditions (image) of the business operator pertaining to the collection of bids or quotes

  • With city company, person whose location division in general competitive bidding qualified person list to prescribe in Yokohama-shi contract rule (March 1964 Yokohama-shi rule 59th) Article 7 is in the city, registry We say thing which does not place head office or main office and individual company where main business base is the city and group which is not registered in registry.
  • After April 1, 2026, if the amount of the project cost is 1 million yen or more, please note that all bids or collection of quotes will be performed from the city company in principle.

Condominium Seismic Diagnosis Support Project

Outline of old and new systems

Assistance system homepage

Condominium Seismic Retrofit Improvement Project

Outline of old and new systems

Assistance system homepage

Assistance projects such as seismic retrofitting of specific buildings

Outline of old and new systems

Assistance system homepage

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For inquiries to this page

Building Disaster Prevention Section, Housing and Architecture Bureau Planning Department

Phone: 045-671-2943 (Condominium), 2928 (Specific Buildings)

Phone: 045-671-2943 (Condominium), 2928 (Specific Buildings)

Fax: 045-663-3255

Email address: kc-taishin@city.yokohama.jp

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Page ID: 405-167-743

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