The company, which is active in Germany and neighbouring countries, is the knowledge and market leader for safer, healthier construction. Its solution concept enables the construction, renovation, and operation of buildings according to high interior hygiene standards on a scientific basis. The Sentinel Haus Concept encompasses all stages of the construction value chain and includes expert advice, training, construction supervision, success control and (marketing) communication for health-related quality assurance. Since 2007, the Freiburg-based company has successfully supported several thousand construction projects and has acquired a very high level of tendering and planning competence. This benefits all players - from manufacturers to retailers, planners, construction companies and craftsmen to investors and private end customers. The search engine for healthier building, renovation and living: The Sentinel Portal provides all market participants with a powerful digital product platform with extensive presentation and communication options.