Laws, Reference URLs, etc.

• Building Energy Conservation Law The latest laws and regulations (outside site)

Law, enforcement order, ministerial ordinance, enforcement regulations, notices, technical advice, etc. / Ministry of Land, Infrastructure, Transport and Tourism

• Detailed regulations (outside site) on the improvement of energy consumption performance of Yokohama-shi buildings

※Article 3, Paragraph 1, Item 2 "Changes to reduce energy consumption performance within a certain range recognized by the mayor for buildings with a certain level of energy consumption performance recognized by the mayor" refers to "Realization of a decarbonized society" (Technical advice) on preparation for enforcement of a law that partially revises the Act on Improvement of Energy Consumption Performance of Buildings to Contribute to (July 4, 2)

• Page of Building Energy Conservation Law (outside site)

Portal site of the Building Energy Conservation Act / Ministry of Land, Infrastructure, Transport and Tourism

• Overview of the Building Energy Conservation Law (outside site)

Commentary, FAQ, Support Center, etc. on the Building Energy Conservation Law / / IBECs

• Energy-saving suitability judgment (outside site)

Registered Energy Conservation Judgment Organization, Manual, Q & A, etc. / / (one company) Housing Performance Evaluation and Indication Association

• (one company) Association of Housing Performance Evaluation and Display (outside site)

Registered energy-saving judging organization, energy-saving performance labeling system, BELS, related systems, etc. // (one company) Housing performance evaluation and display association

• Delegation (PDF: 94KB) of duties of building energy consumption performance conformity judgment by rule of law Article 15 Clause 1 about improvement of energy consumption performance of building (PDF: 94KB)

In Yokohama City, the above notification delegates all of the building energy consumption performance suitability judgment to the registered building energy consumption performance evaluation organization (registered energy saving judgment organization), and the registered energy saving judgment organization carries out energy saving suitability I can.

※Partial amendments were enforced on April 1, 2025. （Revisions (PDF: 363KB)）

• Search of registered energy-saving judging organization (outside site)

Search of registered energy-saving judging organizations, congestion status, etc. // (one company) Housing performance evaluation and display association

• Building Energy Conservation Law-related work (energy saving calculation, equipment design, construction supervision) Page of office list that can support (outside site)

Consultation on design and construction supervision // (one company) Japan Association of Equipment Design Offices

• Technical information on energy consumption performance of buildings (outside site)

Calculation basis for energy consumption performance, technical information, etc. / National Research and Development Agency Building Research Institute

• Programs that comply with energy-saving standards for housing (outside site)

Calculation Program Manual for Residential Buildings / National Research and Development Agency Building Research Institute

• Programs that comply with energy conservation standards for non-residential buildings (outside site)

Calculation program manuals for non-residential buildings / National Research and Development Agency Building Research Institute

• The BEST Program (outside site)

Overview of the BEST Computation Program // IBECs

• Application assistance tools (various statements, etc.) (outside site)

Calculation form for housing part // (one company) Housing performance evaluation and display association

• Page (outside site) of purchase of book pertaining to energy saving of house, building

Sales of energy-saving calculation manuals, etc. // (one company) Housing Performance Evaluation and Labeling Association

• Seminar information (outside site)

Energy-saving seminars, etc. / JSBC