The Sentinel-Haus® Concept is intended for allergy sufferers and those with sensitive health – and also for healthy people who just want to stay healthy. It is a building concept, currently primarily for timber-framed houses, that has been developed within the framework of the German federal foundation for the promotion of environmental projects “Healthy Accommodation” ("Wohngesundheit in Lebensräumen"). Within the framework of this concept, natureplus is the most important selection criterion for the Building materials, furnishings and fittings. The Sentinel-Haus® Concept is currently being developed for application to solid-built buildings.