Frequently asked questions - clearly answered.

No, the iSFP is voluntary. It sets out prioritised renovation steps and can trigger a funding bonus (iSFP bonus) when individual measures are implemented.

Depending on the overall degree of fulfilment, the DGNB awards Silver, Gold and Platinum. Gold is achieved from 65 % overall fulfilment (with a minimum of 50 % in each topic area). The assessment covers environmental, economic, sociocultural and functional quality across the life cycle.

The German Sustainable Building Quality Seal (QNG-PLUS/PREMIUM) is a prerequisite for the “Climate-friendly new construction” funding programme (KFN/BEG). We prepare the QNG verification together with the DGNB certification.

A life cycle assessment according to DIN EN 15978 is required for QNG and DGNB, among others. It evaluates the CO₂ emissions (including embodied emissions) and the resource use over the entire life cycle of a building.

InfraCarbon is our platform for CO₂ and resource transparency in transport infrastructure - from AI-assisted plan analysis and the digital infrastructure model to a traceable CO₂ balance and the resource passport.

As early as possible - ideally in the planning phase. DGNB/QNG requirements and energy targets can then be met most cost-effectively and without expensive redesigns.

We are based in Ratingen near Düsseldorf. We work throughout Germany - our references range from North Rhine-Westphalia to Bavaria.