In Germany, houses are rated primarily according to the criterion of energy efficiency, and are subsidised by the government through the Kreditanstalt für Wiederaufbau. Of course, energy consumption is an important criterion when building a home, but it should not be the only one.
If many other criteria besides fuel consumption are important when buying a car, the client’s requirements concerning architecture, the interior, technology, variability, safety, customisability and trust in the manufacturer should also be closely examined and objectively evaluated when building a house.
Since its founding in 2007, the German Sustainable Building Council (DGNB) has developed criteria for assessing buildings – initially for multi-storey residential buildings and offices, but now also for single-family homes. It summarises these criteria in the Sustainability Plan of the DGNB.
The following criteria are used to assess a building’s sustainability:
- ecological quality
emissions measurements, primary energy consumption etc.
- economic quality
lifecycle costs, flexibility of use etc.
- socio-cultural and functional quality such as user comfort, health, functionality
indoor air quality, individual floor plans, burglary protection, thermal insulation etc.
- technical quality such as fire and acoustic insulation
- process quality, i.e. the quality of planning and construction as well as
- quality of location
building site, transport links, proximity to schools, medical care etc.
For new buildings, the award begins with DGNB Silver certification for houses that fulfil a total of 50% or more of all the criteria.
If a building fulfils 65% or more of the criteria, DGNB Gold certification is awarded.
To qualify for DGNB Platinum certification, a project must fulfil at least 80% of the criteria in total.
Moreover, in each sub-category except for “place of construction”, at least 35% of the criteria must be fulfilled for Silver certification, at least 50% for Gold, and at least 65% for Platinum certification.
You can find out more about the DGNB’s sustainability criteria on the website of the DGNB.
After the DGNB awarded the very first Gold Sustainability Certificate in the world for a house for the Variant 35-154 show home in Oberleichtersbach, which is heated with a gas fuel cell, the latest house model in Fellbach achieved the highest possible certification level: Platinum.
Your benefits at Hanse Haus:
Beginning with our near turnkey homes, all Hanse Haus prefabricated houses with Hanse Haus basement/floor slab receive the Gold Sustainability Certificate of the German Sustainable Building Council (DGNB).