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Certification of low-carbon building new construction plans

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Certification of low-carbon building new construction plans

Last Updated July 22, 2024

About revision of low-carbon building certification system (enforced on October 1, 2022)

On October 1, 2022, the enforcement regulations on the promotion of low-carbon cities were partially revised, and the certification standards were revised.

If you apply for certification to Yokohama City after October 1, 2022, the new standard will be applied.
Please note that after October 1, 2022, we will not be able to accept applications for certification based on a certificate of conformity, etc. that applies the standards before the revision.

Review of Certification Standards

Please refer to the following URL for details on the review of the certification criteria.
https://www.hyoukakyoukai.or.jp/yudou_teitanso/kaisei221001.html (external site)

About mail correspondence

[mail correspondence]
For procedures that do not involve payment of fees, we will accept and return by mail.

In addition, return of duplicates, certification notices, etc. will be handled by mail.
(For details, please see About mail correspondence such as notification.)

※Please note that we do not accept mail as before for applications for certification involving payment of fees.

[Contact Reception hours]
※Please come to the counter at the following time.
8:45～11:30、13:00～16:30

Consultations are also accepted by e-mail, etc., so please use them.
Email address: kc-teitanso@city.yokohama.jp

Page Information

Overview of the system and benefits of certification
Procedures for application for certification, certification standards, etc.
About application documents
About the procedure of change
Report of completion
Certification application fees, etc.

Update history

R06.04.01　Low-carbon building new construction plan authorization conduct summary (PDF: 144KB)Some amendments have been made.
R04.10.01　We revised some plan authorization conduct summary such as low-carbon building new construction.
R03.04.01　seal on the application form is no longer needed. Also, the power of attorney seal shall not request it. (Please determine the necessity of seal between the delegates and the delegates.)

Overview of the System

The "Law Concerning the Promotion of Low-Carbon Urbanization" was promulgated in September 2012 and came into effect on December 4, 2012.

Under this law, we will reduce energy consumption in urban areas (low carbon) and promote global warming countermeasures by implementing various measures such as centralizing urban functions and promoting the use of public transportation. . As one of these measures, there is a certification of the "Low Carbon Building New Construction Plan", which meets the prescribed standards when performing new construction, extension, or other renovation work of buildings that contribute to low-carbon buildings. The competent administrative agency approves the plan that conforms to it. Buildings that have been certified under the plan can receive preferential tax treatment and relaxation of floor area ratio as "low-carbon buildings".

Overview of plans for new low-carbon buildings (PDF: 7,827KB)

[Supplements] Relationship with "Low Carbon Town Development Plan"

Article 7 of the Act on Promotion of Low-Carbon Cities in the City stipulates that municipalities can create a "low-carbon town development plan", but there is no area in Yokohama City that has established the plan at this time . However, even in this case, it is possible to apply for certification of a plan such as a new low-carbon building.

Benefits of certification

Tax incentives apply (reduction of mortgage loans, reduction of registration and license tax)
Relax floor area ratio under the Building Standards Law for rooms, etc. necessary to make low-carbon buildings
Reduce energy consumption in buildings, reduce running costs and reduce the burden on the global environment.

→　Please see below for tax incentives and required documents.
[In general tax subject to special exceptions]　　"Special measures for certified low-carbon housing" (outside site) (Ministry of Land, Infrastructure, Transport and Tourism)
[Reduction of city planning tax]　　　"Page of city tax" (Yokohama-shi finance bureau chief tax department)
[About New Housing and House Certification]　　“Information on New Housing Certificates” (City of Yokohama, Housing and Architecture Bureau Information Consultation Section)
Tax Consultation Corner on National Taxes　“National Tax Agency Tax Answer” (external site) (National Tax Agency)
[How to check the tax office near you]　　"Kanagawa Prefecture Tax Office Location / Information" (External Site) (National Tax Agency)

About procedure of certification application

It is necessary to apply for certification for low-carbon building new construction plans before starting construction.
The standard application procedure is a procedure for applying to the competent administrative agency after undergoing a technical examination of the certification criteria in advance by a registered energy saving judgment organization or a registered house performance evaluation organization (hereinafter referred to as "examination organization").
In addition, please refer to each examination organization for details as target building to perform technical examination may vary according to examination organization.
- Registered Energy Conservation Judgment Organization = Registered Building Energy Consumption Performance Judgment Organization prescribed in the Act on Improvement of Energy Consumption Performance of Buildings
- Registered house performance evaluation organization = Registered house performance evaluation organization prescribed in the Act on Promotion of Housing Quality Assurance, etc.
The screening organization can be searched from this website.
Registered house performance evaluation organization (Housing Performance Evaluation and Indication Association HP) (outside site)
If you do not undergo a technical review in advance, or if you wish to apply for confirmation along with the certification, please contact us in advance.
Please submit required documents to the address below.
[Certification application window]
Building Environment Section, Building Planning Division, City of Yokohama, Housing and Architecture Bureau Building Guidance Department
Telephone 045-671-4526
25th floor north side of 10 City Hall, 6-50 Honcho, Naka-ku, Address

Certification standards, etc.

About certification criteria

Please refer to laws and regulations, notices, etc. for the certification criteria. In addition, please confirm as Motoichi devised summary when we authorized.
Low-carbon building new construction based on Yokohama-shi "law about promotion of low carbonization of city" plan authorization conduct summary (PDF: 144KB)

Precautions for Certification

Please note that buildings in the urbanization adjustment area in Motoichi cannot be certified by law (Article 7, Article 53) on promotion of low-carbon cities.
Please note that buildings that fall under the following items may not be certified based on the basic policy on promoting low-carbon cities. .
1. If the city does not comply with laws and regulations concerning the conservation green space
  (Example of the relevant green space conservation regulations)
  - Green Area Law Green Area conservation Area, Special Green Area conservation Area, Green Area and Green Area Agreement
  - Production Green Area Law Production Green Areas
  - Building agreement of Building Standard Act, restrictions on conservation of green space by ordinance
2. In the case of a green area that is an urban facility

About application documents

required documents at the time of application for certification

Please bind and submit all copies of the copy in A4 size file.
(If you have not received a technical review by the reviewing organization, please submit one copy and two copies of the copy.)

※About seal

seal on the application form is no longer needed.

Also, the power of attorney seal shall not request it. (Please determine the necessity of seal between the delegates and the delegates.)

Documents to be submitted
1 Common matters
Attached books, etc.		Details of matters to be specified	Style
Application for Certification		Regulation No. 5 Style	Regulation Form No. 5 (outside site)
Power of Attorney		When the applicant delegates the procedure to another person	－
Certificate of Conformity		Attached when technical review by the Examining Body in advance ※Please attach the original to the duplicate and the copy to the original. ※Please prepare a copy of the attached documents (with the seal of the Examining Agency) when the certificate of conformity is issued by the Examining Agency. Confirm that the technical review has been completed.	－
Design description		Explanation that the efficiency and other performance of the use of energy in buildings conform to the standards set forth in Article 54, Paragraph 1, Item 1 of the Act	－
Nearby sketch		Direction, road and target features	－
Layout drawing		Scale and direction	－
		Site boundary, location of building on site and distinction between building pertaining to application and other buildings	－
		Low-carbon emissions other than air conditioning equipment and air conditioning equipment Construction equipment that contributes (hereinafter referred to as “low-carbon equipment”) It is said to be the first place.	－
		Greening of buildings and other measures for low-carbon buildings (Hereinafter referred to as "low carbon reduction measures" in this table.)	－
Specifications (including finishing table)		Type and dimensions of components	－
		Types of Low Carbon Equipment	－
		Contents of Low Carbon Measures	－
Floor plan of each floor		Scale and direction	－
		Floor plan, name, use and dimensions of each room, and height of ceiling	－
		Position and type of wall	－
		Position and structure of the opening	－
		Location of low-carbon facilities	－
		Low-carbon measures	－
Floor area quadrature map		Dimensions and formulas of each part of the building required for quadrature of floor space	－
Floor area table by application		Floor area by application	－
Elevations		Scale	－
		Location of exterior walls and openings	－
		Location of low-carbon facilities	－
		Low-carbon measures	－
Cross-sectional view or rectangular view		Scale	－
		Height of buildings	－
		Structure of exterior walls and roofs	－
		The height of the eaves and the eaves and the eaves	－
		Structure of the back of the hut	－
		The height and structure of ceilings on each floor	－
		The height and structure of the floor and the structure of the underfloor and foundation	－
Details of each section		Scale	－
Details of each section		Type and dimensions of materials for exterior walls, openings, floors, roofs and other areas with thermal insulation.	－
Statements of Operations		The contents of the calculation when calculations and other calculations related to the efficiency and other performance of the energy use of buildings are required.	－
Documents required to confirm that low-carbon measures conform to the standards set by the Minister of Economy, Trade and Industry, the Minister of Land, Infrastructure, Transport and Tourism and the Minister of the Environment as provided for in Article 54, Paragraph 1, Item 1 of the Act.		Matters necessary for conformity assessment to the standards set by the Minister of Economy, Trade and Industry, the Minister of Land, Infrastructure, Transport and Tourism and the Minister of the Environment as provided for in Article 54, Paragraph 1, Item 1 of the Act on Low Carbon Measures	－
2 Non-residential buildings (meaning buildings provided only for uses other than houses) or apartment houses (meaning houses other than apartment houses, tenement houses and other single-family houses.) The same applies in this table below.) Or complex buildings (meaning buildings to be used for purposes other than houses and houses. The same applies in this table below. ) Other than dwelling units
Attached books, etc.		Details of matters to be specified	Style
Equipment table	Air conditioning equipment	Type, specifications and number of heat source machines, pumps, air conditioning machines and other equipment	－
	Mechanical ventilation equipment other than air conditioning equipment	Type, specifications and number of airers, exhausters and similar equipment	－
	Lighting equipment	Type, specifications and number of lighting equipment	－
	Hot water supply equipment	Type, specifications and number of water heaters	－
		Type, specifications and number of facilities for using solar heat for hot water supply	－
		Type and number of water-saving equipment	－
	Building equipment that contributes to low-carbon emissions other than air conditioning equipment	Type, specifications and number of building equipment that contributes to low-carbon emissions other than air conditioning equipment.	－
Specifications	Elevators	Type, number, loading capacity, rated speed and speed control method of elevators	－
System diagram	Air conditioning equipment	Location and connection of air conditioning equipment	－
	Mechanical ventilation equipment other than air conditioning equipment	Position and connection of mechanical ventilation equipment other than air conditioning equipment	－
	Hot water supply equipment	Location and connection of hot water supply facilities	－
	Building equipment that contributes to low-carbon emissions other than air conditioning equipment	Location and consolidation of building equipment that contributes to low-carbon emissions other than air conditioning equipment	－
Floor plan of each floor	Air conditioning equipment	Scale	－
		Effective range of air conditioning equipment	－
		Location of heat source equipment, pumps, air conditioning equipment and other equipment	－
	Mechanical ventilation equipment other than air conditioning equipment	Scale	－
		Location of air turbines, exhaust systems and similar facilities	－
	Lighting equipment	Scale	－
	Lighting equipment	Location of lighting equipment	－
	Hot water supply equipment	Scale	－
		Location of hot water supply facilities	－
		Measures for heat retention taken in pipes	－
		Position of water-saving equipment	－
	Elevators	Scale	－
	Elevators	Position	－
	Building equipment that contributes to low-carbon emissions other than air conditioning equipment	Scale	－
		Position	－
Control diagram	Air conditioning equipment	Control method of air conditioning equipment	－
	Mechanical ventilation equipment other than air conditioning equipment	Control method of mechanical ventilation equipment other than air conditioning equipment	－
	Lighting equipment	Control of lighting equipment	－
	Hot water supply equipment	How to control hot water supply equipment	－
	Building equipment that contributes to low-carbon emissions other than air conditioning equipment	Control methods for building equipment that contributes to low-carbon emissions other than air conditioning equipment	－
3 Single-family houses (limited to those that do not have a part to be used for purposes other than the residence of people) or apartments or dwelling units of complex buildings
Attached books, etc.		Details of matters to be specified	Style
Equipment table	Air conditioning equipment	Type, position, specifications, number and control method of air conditioning equipment	－
	Mechanical ventilation equipment other than air conditioning equipment	Type, position, specifications, number and control method of mechanical ventilation equipment other than air conditioning equipment	－
	Lighting equipment	Type, position, specifications, number and control method of lighting equipment	－
	Hot water supply equipment	Type, position, specifications, number and control method of water heaters	－
		Type, position, specifications, number and control method of equipment for using solar heat for hot water supply	－
		Type, position and number of water-saving equipment	－
	Building equipment that contributes to low-carbon emissions other than air conditioning equipment	Type, position, specifications, number and control method of building equipment that contributes to low-carbon emissions other than air conditioning equipment.	－

※In addition to these documents, you may be required to submit documents required for certification.

Other styles
Name	Style
Minor change applicable certificate application (for buildings that receive only conformity judgment)	Outline No. 2 style (outside site)
Notification of withdrawal (when withdrawing before certification)	Summary No. 3 style (outside site)
Application form to cancel plans for new low-carbon buildings	Outline No. 4 style (outside site)
Report on new construction of low-carbon buildings	Summary No. 6 style (outside site)
Re-grant application such as plan authorization letter of advice such as low-carbon building new construction (300 yen commission) In the case of loss, please attach the previous certification letter (* For details, please refer to Article 14 of the outline (PDF: 146KB))	Outline No. 10 style (outside site)

About the procedure of change

When the plan is changed

The procedure differs depending on whether technical review is necessary for the changes. Please confirm the contents in advance with the examination organization that received the technical examination at the time of application for certification.
※Change of plan such as architecture (when technical examination is necessary), "change authorization application" (related to Article 55 of the Plan Change Law)

Documents to be submitted
Name	Style
Application for Change Certification (Related to Article 55 of the Plan Change Act) In principle, the change application fee is half of the certification application fee. (rounded down to less than 100 yen) (Example: 2,400 yen for a detached house that has received a certificate of conformity with the technical examination by the examination body.)	Regulations Style No. 7 (outside site)

When the certified building owner is changed

Documents to be submitted
Name	Style
Notification of change of certified building owner (There is no charge.) When you hope for re-grant of authorization letter of advice, please apply for "re-grant application of authorization letter of advice (outside site)" at the same time.	5 (outside site) of summary second style

Report of completion

When the construction work is completed, please submit the "Construction Supervision Report" to the "Report that the construction based on the plan for new low-carbon buildings has been completed" immediately and submit two copies of the copy.

Documents to be submitted
Name	Style
Report that construction based on plans for new low-carbon buildings has been completed	Outline fifth style (outside site)

Certification application fees, etc.

After accepting at the counter, please pay the prescribed fee with the fee payment machine.

Fees for single-family homes
Submission method		Amount
If you have received a certificate of conformity with the technical examination by the Examining Body		4,900 yen
Other than the above	Floor area less than 200 m2	34,000 yen
Other than the above	Floor area of 200 m2 or more	38,000 yen

※Please refer to the following about apartment house, building of non-residential use.
※The re-issuance fee is 300 yen.
About authorization fee of plan such as low-carbon building new construction (PDF: 246KB)

Links to related information

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Inquiries to this page

Building Planning Division, Housing and Architecture Bureau Building Guidance Department

Telephone: 045-671-4526

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

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