The building certification ensures future-oriented buildings that are ecological, economical, flexible and of high quality. Certified structures provide a healthy and comfortable environment for users. The rating systems are based on superordinate goals of building better buildings and, above all, operating them sustainably. The federal government supports these efforts with subsidies and ensures their sustainable use with the Sustainable Building Quality Seal (QNG). We make the complex requirements manageable and accompany you on the way to successful certification.