ean50 GmbH is a leading company in quality assurance for residential and commercial construction, with over 20 years of experience. The company provides a wide range of services, including building energy consulting, air tightness testing, on-site construction supervision, and indoor air quality assessments. Operating nationwide, ean50 GmbH serves various clients, including housing associations, prefabricated house manufacturers, architects, and private individuals. With a dedicated team of 39 professionals, the company emphasizes sustainability and a customer-oriented approach to project execution, ensuring that services are delivered locally.