This collection of ecological evaluations and building physics data is a classic and an essential item in every design library. The fifth edition of the component catalog provides designers, architects, and competition organizers with a familiarly dependable mix of construction details based on passive house standards; information about building materials, execution, and maintenance; and parameters for the verification of ecologically optimized planning as well as for the tender process. New features include insights into the circularity of components, and QR codes that enable direct access to the online Baubook database. All assessments are based on international passive house standards. This is a meticulously researched reference work