BNK and BNG are assessment systems for sustainable residential buildings in Germany. Since 01.01.2023, all residential building sizes can be certified: Buildings with 1 to 5 residential units with the Assessment System for Small Sustainable Housing (BNK)<\/strong> and buildings with more than 5 residential units with the Assessment System for Sustainable Buildings (BNG).<\/strong><\/span><\/p>\n The BNK\/BNG certification system assesses the sustainability of residential buildings on the basis of specific criteria<\/a>, which are set out in so-called criteria profiles. These criteria cover various quality areas in order to ensure a comprehensive assessment of sustainability: Socio-cultural quality and functionality, economic quality, ecological quality and process quality. The BNG\/BNK certificate is one of the awards that are a prerequisite for obtaining the QNG<\/a> and thus also for the promotion of climate-friendly new construction<\/a> with QNG. <\/span><\/p>\n A BNK\/BNG auditor<\/a> accompanies a project for certification from the planning phase through to completion. The auditor can also be the architect or the energy consultant (with further training as a BNK\/BNG auditor) for the project. Alternatively, the auditor can be involved in the planning and construction process as a separate auditor.<\/p>\n The BNG\/BNK certificate is one of the awards that are a prerequisite for obtaining the QNG<\/a> and thus also for the promotion of climate-friendly new construction<\/a> with QNG. After successful conformity testing by the BiRN and issuance of the BNK\/BNG seal of approval and the QNG, these can be submitted to the KfW in order to apply for the Climate-Friendly New Construction grant. <\/span><\/p>\nHow does BNK\/BNG certification work?<\/h3>\n
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